Topics by letter A

  1. alligator and crocodile
  2. able and capable
  3. ale and beer
  4. allergy and common-cold
  5. advertising and marketing
  6. almonds and peanuts
  7. assemble and coalesce
  8. atom and electron
  9. alienation and disposal
  10. authentic and genuine
  11. alone and lonely
  12. affect and effect
  13. agreement and contract
  14. aids and hiv
  15. amphetamine and cocaine
  16. android and apple
  17. algebra and trigonometry
  18. arteriosclerosis and atherosclerosis
  19. aldose and ketose
  20. angel and ghost
  21. accurate-measurement and precise-measurement
  22. arson and incendiary
  23. actor and waiter
  24. anxious and excited
  25. aggression and assertion
  26. amphibian and reptile
  27. able and willing
  28. anarchist and fascist
  29. abundant and greedy
  30. article and purview
  31. algeria and morocco
  32. accord and bestow
  33. attractive and magnetic
  34. antiphrasis and antithesis
  35. arrogant and confident
  36. antinomy and oxymoron
  37. adventurous and intrepid
  38. alpacas and llamas
  39. articulate and eloquent
  40. aporia and malapropism
  41. acceleration and velocity
  42. al-qaeda and taliban
  43. age and generation
  44. adam-smith and karl-marx
  45. adage and proverb
  46. average and median
  47. art and nudity
  48. associate and conflate
  49. ambiguity and uncertainty
  50. atrophy and deteriorate
  51. absolve and vindicate
  52. acquit and exonerate
  53. array and plethora
  54. annulment and divorce
  55. accord and congruence
  56. agitate and irritate
  57. apple and fenland
  58. ambiance and atmosphere
  59. algebra and arithmetic
  60. alienate and ostracize
  61. attorney and lawyer
  62. anxiety-attack and hot-flash
  63. accuracy and precision
  64. ale and lager
  65. apartment and condo
  66. attain and obtain
  67. autotroph and heterotroph
  68. adhesion and cohesion
  69. aerobic and anaerobic
  70. affidavit and declaration
  71. aristotle and plato
  72. antiperspirant and deodorant
  73. absolute and relative
  74. ape and gorilla
  75. anger and rage
  76. adhd and bipolar-disorder
  77. argumentative and discursive
  78. agp and pci
  79. apa and mla
  80. asthma and bronchitis
  81. attorney and paralegal
  82. acrylic and enamel
  83. aquamarine and topaz
  84. anxiety and fear
  85. accountant and auditor
  86. allergy and asthma
  87. arthritis and tendonitis
  88. asthma and pneumonia
  89. anxiety and stress
  90. average and mean
  91. accountant and bookkeeper
  92. asthma and bronchiolitis
  93. affirmation and prayer
  94. analog and digital
  95. ampule and vial
  96. ajax and javascript
  97. appreciation and gratitude
  98. america and china
  99. assurence and audit
  100. agnostic and atheist
  101. allot and alot
  102. act-of-god and natural-disaster
  103. award and reward
  104. acceptance and tolerance
  105. atom and ion
  106. allopathic and osteopathic
  107. average-basis and average-rate
  108. anion and cation
  109. altar and alter
  110. arbitration and litigation
  111. arbitration and mediation
  112. addiction and dependence
  113. appropriation and authorization
  114. ant and termite
  115. anxiety and depression
  116. animation and animatronics
  117. add and adhd
  118. addiction and compulsion
  119. aluminum and steel
  120. advil and aleve
  121. amortization and depreciation
  122. alpha and omega
  123. advertising and public-relations
  124. anaesthesia and analgesia
  125. artistic and creative
  126. astronomy and astrophysics
  127. alienation and estrangement
  128. azalea and rhododendron
  129. awol and desertion
  130. anger and hostility
  131. ascii and binary
  132. anxiety-disorder and panic-disorder
  133. appetite and hunger
  134. abundance and wealth
  135. assertive and pushy
  136. among and between
  137. ampere and kilowatt
  138. arid and drought
  139. autism and gifted
  140. abnormality and normality
  141. arid and dry
  142. admissibility and relevance
  143. affront and offend
  144. abstract and concrete
  145. abscissa and domain
  146. abase and abate
  147. after and afterward
  148. artery and vein
  149. ambiguity and risk
  150. alternator and generator
  151. algorithmic and formulaic
  152. awning and canopy
  153. appoggiatura and elliptical
  154. anarchy and disestablishmentarianism
  155. aristocracy and feudalism
  156. actor and actress
  157. algae and angiosperm
  158. affection and love
  159. asbestosis and mesothelioma
  160. autism and cerebral-palsy
  161. assurance and insurance
  162. action and reaction
  163. ambition and aspiration
  164. aspiration and desire
  165. arthritis and gout
  166. although and despite
  167. aim and requirement
  168. aa and na
  169. achiever and dreamer
  170. apple and quince
  171. accident and incident
  172. abase and abash
  173. asynchronous and synchronous
  174. aspiration and inspiration
  175. apr and note rate
  176. art and design
  177. asthma and chronic-bronchitis
  178. allegory and analogy
  179. arena and stadium
  180. assuage and attenuate
  181. angiosperm and moss
  182. acciaccatura and appoggiatura
  183. annuity and perpetuity
  184. ascii and unicode
  185. arabic and farsi
  186. assumption and presuppositions
  187. anti-rationalism and rationalism
  188. atelectasis and emphysema
  189. asbestosis and pleural-plaques
  190. asbestos and fiberglass
  191. asbestosis and emphysema
  192. asbestosis and pulmonary-fibrosis
  193. apparel and clothing
  194. admire and envy
  195. anemia and hemophilia
  196. arthritis and bursitis
  197. arthritis and rheumatoid-arthritis
  198. adhd and autism
  199. acid-reflux and heartburn
  200. arena and colliseum
  201. arena and field-house
  202. advance and advancement
  203. accrued-revenue and deferred-revenue
  204. asthma and copd
  205. altruistic and amiable
  206. arrogant and haughty
  207. adenoma and carcinoma
  208. acid-reflux and ulcer
  209. ambiguity and vagueness
  210. assurance and audit
  211. audit and review
  212. arrogant and contemptuous
  213. assessment and evaluation
  214. assessment and screening
  215. assault and battery
  216. abatement and remediation
  217. abatement and exemption
  218. abrogate and overrule
  219. accomplice and conspirator
  220. accounts-payable and accounts-receivable
  221. accretion and amortization
  222. anionic-polymarization and cationic-polymarizion
  223. awesome and awestruck
  224. arrow-root and casava
  225. absurdism and existentialism
  226. autobiography and memoir
  227. agave and honey
  228. agriculture and farming
  229. acrylic and polyester
  230. adoration and appreciation
  231. apple-ipad-3 and apple-ipad2
  232. ability and qualified
  233. authorize and entrust
  234. antique and curio
  235. austerity and thrifty
  236. aeroplane and aircraft
  237. alternating-current and direct-current
  238. assumption and proposition
  239. adjective and adverb
  240. arenas and stadium
  241. acrylic and polystyrene
  242. accusation and allegation
  243. autotrophic-eukaryotes and hetrotrophic-eukaryotes
  244. assumption-of-risk and volenti-non-fit-injuria
  245. aquired-immunity and natural-immunity
  246. absolute-assignment and collateral-assignment
  247. appraised-value and assessed-value
  248. abdominoplasty and abdominoscopy
  249. abdominoplasty and tummy-tuck
  250. abdominoplasty and lipoplasty
  251. acetaminophen and ibuprofin
  252. allergic-conjunctivitis and pink-eye
  253. alopecia and male-pattern-baldness
  254. analgesia and analgesic
  255. antibiotic and probiotic
  256. assumption and principle
  257. antisocial-personality-disorder and multiple-personality-disorder
  258. antisocial and introvert
  259. apheresis and blood-transfusion
  260. astigmatism and cataracts
  261. asymmetry and symmetry
  262. anxiety and bipolar
  263. alpha-hydroxy-acid and retinol
  264. acid-rinse and skin-peel
  265. algae and seaweed
  266. ayurveda and traditional-chinese-medicine
  267. assurance and reinsurance
  268. animal-antibiotics and human-antibiotics
  269. attitude and personality
  270. attitude and disposition
  271. abdominoplasty and panniculectomy
  272. anterior-resection and ap-resection
  273. anterior-resection and hartmann-procedure
  274. aquit and exonerate
  275. ailment and malady
  276. adenocarcinoma and mesothelioma
  277. accutane and acne-laser-treatment
  278. accutane and retin-a
  279. accutane and spironolactone
  280. annuity-settlement and lump-sum
  281. anglicana and orthodox
  282. anger and passion
  283. allergy and illness
  284. allograft and autograft
  285. adaptive and responsive
  286. arborizing-veins and spider-veins
  287. adware and malware
  288. apple-brandy and pomance-brandy
  289. anonymous-function and closure
  290. arthritis and osteoarthritis
  291. avant-garde and futurism
  292. avante-garde and odalisque
  293. arena and music-hall
  294. ameliorate and pacify
  295. arid and sere
  296. adam-smith and john-maynard-keynes
  297. adviser and benefactor
  298. advise and exhort
  299. avante-garde and forefront
  300. avante-garde and metropolis
  301. adapt and adopt
  302. avante-garde and courtesan
  303. await and wait
  304. argue and wrangle
  305. abide and resided
  306. annuity and structured-settlement
  307. ascertain and assert
  308. annuity and installment-note
  309. annuity-due and immediate-annuity
  310. absolutism and dogmatic
  311. a-cash-balance-benefit-program and a-defined-benefit-program
  312. authoritarianism and dogmatic
  313. activty-diagram and sequence-diagram
  314. analysis and synthesis
  315. abstraction and encapsulation
  316. allele and gene
  317. ass and donkey
  318. aim and purpose
  319. axiom and hypothesis
  320. absolutism and totalitarian
  321. advocate and recommend
  322. affluent and wealthy
  323. aware and mindful
  324. apple and banana
  325. aramids and polyamide
  326. aristocracy and oligarchy
  327. annuity and lump-sum-payment
  328. aristocracy and monarchy
  329. amenities and facilities
  330. axiology and metaphysics
  331. army and military
  332. attribute and characteristic
  333. abhor and hate
  334. aspect and characteristic
  335. access-2013 and dbase-8-plus
  336. alpha-hydroxy and retinol
  337. agreement and protocol
  338. amazing and phenomenal
  339. agreement and legal-protocol
  340. adopt and pass
  341. assyria and persia
  342. approach and method
  343. agile and rup
  344. abnormal and irregular
  345. analingus and cunnalingus
  346. animals and people
  347. aid and amenity
  348. amenity and appliance
  349. allele and trait
  350. alexander and marcus
  351. anode and cathode
  352. abate and attenuate
  353. alleviate and attenuate
  354. aspnet and php
  355. arts and athletics
  356. ambition and apirant
  357. alicit and derive
  358. auber and wasp
  359. ambivalence and contradiction
  360. aware and conscious
  361. apricot-kernel-oil and apricot-oil
  362. ambigious and cryptic
  363. ambiguous and cryptic
  364. aquitted and not-guilty
  365. acquit and not-guilty
  366. assume and surmise
  367. altruitic and magnanimous
  368. altruistic and magnanimous
  369. advil and motrin
  370. animal and human
  371. alice and andrew
  372. american-pear and korean-pear
  373. air-mattress and coil-mattress
  374. acrylic and mylar
  375. arthritis and pseudogout
  376. administration and management
  377. axiom and construct
  378. adsl and dsl
  379. arse and elbow
  380. advil and alive
  381. apple and taco
  382. annoyed and irritated
  383. accrual and entitlement
  384. antibodies and immunoglobulin
  385. actor and thespian
  386. aquaeous-humor and vitreous-humor
  387. aqueous-humor and vitreous-humor
  388. an-art-gallery and museum
  389. art-gallery and museum
  390. abb and sbb
  391. adjective and attribute
  392. alzheimers and dimensia
  393. android and iphone
  394. alzheimers and senile-dementia
  395. anemia-of-chronic-disease and pernicious-anemis
  396. anemia-of-chronic-disease and pernicious-anemia
  397. android-cell-phone and apple-cell-phone
  398. aeroplane and jet
  399. apprehend and grasp
  400. alpha-hydroxy-acids and retinol
  401. acid and lsd
  402. arrogance and confidence
  403. arrogance and pride
  404. assign and delegate
  405. affliction and misfortune
  406. aeroplane and helicaptor
  407. aeronautical and mechanical
  408. aeronautical-field and mechanical-field
  409. apple and white
  410. agoraphobia and social-phobia
  411. ambitious and driven
  412. agitated and irritated
  413. arrogant and egotistical
  414. and and of
  415. almond and penut
  416. ask and question
  417. acquit and justify
  418. alternator and motor
  419. audience and spectator
  420. attrition and detrition
  421. appreciation and expectation
  422. anticipate and expect
  423. adoration and love
  424. antibiotics and toxins
  425. adherence and adhesion
  426. acquire and obtain
  427. apple-ipad-computer and apple-macbookpro-computer
  428. assessment and review
  429. algebraic-expression and polynomial
  430. acerbic and acrid
  431. acidulous and acrimonious
  432. ardent and vehement
  433. adb-port and serial-port
  434. adb-port and appletalk
  435. abs and arms
  436. apple-imac and apple-pro
  437. angiography and arteriogram
  438. apple-i-phone-5 and galaxy-s4
  439. agile and ductile
  440. amish and mennonite
  441. absolutist and fanatic
  442. autocracy and commonwealth
  443. apricots and peaches
  444. apple and pear
  445. apple and batman
  446. aashray and umeed
  447. apricot and peach
  448. amend and mend
  449. agitation and irritation
  450. agitation and friction
  451. agitation and pain
  452. agitation and lubricity
  453. agitation and restlessness
  454. agitation and boredom
  455. agriculture and former
  456. autocrat and despot
  457. antihistamine and sudafed
  458. antihistamine and decongestant
  459. axiom and law
  460. acerb and acerbic
  461. apr and lar
  462. apple-iphone-5c and samsung-galaxy-s4
  463. apartment and studio-apartment
  464. ataxia and atrophy
  465. affable and amiable
  466. alu and cpu
  467. acetominophen and ibuprophen
  468. adverb and conjunction
  469. atomic-bomb and nuclear-bomb
  470. anthropology and archaeology
  471. apple-cider and apple-juice
  472. asynchronous and syncronous
  473. atypical and typical
  474. atypical and non-conformist
  475. ambiguous and vague
  476. apple and samsung
  477. avenge and revenge
  478. abate and abridge
  479. agile and nimble
  480. alzheimers and dementia
  481. adam-smith and karl-heinrich-marx
  482. awareness and consciousness
  483. atomic-mass and atomic-weight
  484. arminian and reformed
  485. almond-milk and soy-mild
  486. almond-milk and soy-milk
  487. asteroid and meteor
  488. autotrophs and heterotrophs
  489. am-radio and fm-radio
  490. agate and onyx
  491. active-ftp and passive-ftp
  492. agate and onzy
  493. agate and onxy
  494. auspicious and propitious
  495. answers and findings
  496. answer and finding
  497. attack and reproach
  498. aspect and thing
  499. anxiety and frustration
  500. accordion and concertina
  501. arena and coliseum
  502. apparatus-gymnastics and tumbling
  503. agreeable and discordant
  504. aphorism and epigram
  505. area and arena
  506. accountance and accounting
  507. accountancy and accounting
  508. accounting and bookkeeping
  509. astimatism and cataract
  510. american-days and romanian-days
  511. autonomy and self-determination
  512. arartment and house
  513. apartment and house
  514. adhere and comply
  515. analgesic and anesthesia
  516. acquitted and innocent
  517. aliens and demons
  518. axe and hammer
  519. arsonist and pyromaniac
  520. abuse and misuse
  521. arrogant and braggart
  522. apple and presumptuous
  523. apple and complacent
  524. abate and abdicate
  525. apple-tree and banana-tree
  526. ak47 and ak74
  527. apathy and empathy
  528. arena and fieldhouse
  529. arrogant and self-center
  530. architect and architectural-engineer
  531. allow and permit
  532. aggravation and agitation
  533. arcane and esoteric
  534. act and sat
  535. activity-diagram and flow-chart
  536. apes and monkeys
  537. amelia-earhart and the-wright-brothers
  538. android and apple-company
  539. apart and away
  540. antecedent and predecessor
  541. attached and enclosed
  542. assumption and belief
  543. atom and molecule
  544. acrylic-fabric and polyester-fabric
  545. ancient-greek and greek
  546. assignment and set-over
  547. abogated and abogating
  548. azithromycin and erythromycin
  549. arrogant and pompous
  550. agriculture and husbandry
  551. applied-linguistics and syntax
  552. admissibility and relevancy
  553. absolustism and autocracy
  554. applied-science and pure-science
  555. autonomy and freedom
  556. arcylic and cellulose-acecate
  557. augumented-reality and virtual-reality
  558. augumented-reality and mixed-reality
  559. american-central-business-district and european-central-business-district
  560. apple and ravine
  561. agreeable and amenable
  562. arrogant and self-assured
  563. application-programming-interface and database
  564. alternative and option
  565. array and vector
  566. aim and objective
  567. announcement and enunciation
  568. ageing-oven and annealing-furnace
  569. answer and problem
  570. apparatus and device
  571. acetal and nylon
  572. algeria and algiers
  573. angina and atherosclerosis
  574. australian-shephard and border-collie
  575. advil and ibuprofen
  576. adam-smith and john-keynes
  577. algebra and calculus
  578. aneurysm and embolism
  579. analogy and parable
  580. accounts-receivable and billing-collections
  581. advice and advise
  582. a and one
  583. admonish and castigate
  584. apple and stupidity
  585. android and windows
  586. affirmation and oath
  587. affidavit and affirmation
  588. affirmation and declaration
  589. a-little and little
  590. apple-imac and macbook-pro
  591. ambiguous and ambivalent
  592. atheism and skepticism
  593. adam-smith and john-stuart-mill
  594. acerbic and acrimonious
  595. assessment and estimate
  596. access and hills
  597. abbreviation and acronym
  598. attitude and belief
  599. aaron-beck and bf-skinner
  600. autotrophs and hetrotrophs
  601. auk and penguin
  602. auk and cormorant
  603. acquired and enquired
  604. ashlee-simpson and jessica-simpson
  605. assume and presume
  606. academic-specialty and academic-track
  607. aristocracy and totalitarianism
  608. aw-of-diminishing-returns and ceteris-paribus
  609. asthenosphere and lithosphere
  610. aspiration and expectation
  611. assassination and murder
  612. asynchronous-transfer-mode and frame-relay
  613. accept and except
  614. allusion and illusion
  615. any-one and anyone
  616. assure and insure
  617. assure and ensure
  618. apprehensive and ominously
  619. antihistamines and decongestant
  620. abstract-class and inheritance
  621. adjacents and consectutive
  622. activated-complex and reaction-intermediate
  623. approach and strategy
  624. a and orange
  625. actual-cash-value and fair-market-value
  626. apparel and fashion
  627. ambivalence and paradox
  628. aa and na
  629. abate and remediate
  630. abatement and remeidation
  631. alive and live
  632. acquitted and not-guilty
  633. acrylic-nails and gel-nails
  634. acrylic and gel
  635. angiogram and arteriogram
  636. allusion and delusion
  637. altruism and generosity
  638. alittle and little
  639. apple-iphone-5c and galaxy-s5
  640. affirm and warrant
  641. apple-5c and samsung-galaxy4
  642. abraxane and taxetere
  643. awesome-guy and cool-guy
  644. asphalt and macadam
  645. abundant and redundant
  646. antecedent and anterior
  647. antecednt and anterior
  648. acrylic-fiber and polyester-fiber
  649. apple-is-solid and orange-is-juicey
  650. arc-lamp and light-bulb
  651. annuity-due and ordinary-due
  652. appliance and gadget
  653. analysis and deductuve-reasoning
  654. accounts-receivable and collections
  655. anorexia and bulimia
  656. amnion and placenta
  657. android-tablet and windows-8-tablet
  658. abraham-lincoln and barrack-obama
  659. apprentice and novice
  660. apple and name
  661. apprentice and protege
  662. appreciation and commendation
  663. advertising and promoting
  664. ayurveda and tcm
  665. alaskan-husky and siberian-husky
  666. apple and car
  667. apple and red
  668. admirable and admiring
  669. almond and peanut
  670. adolf-hitler and josef-stalin
  671. animal-cell and plant-cell
  672. anthroplogy and archeology
  673. acteminophen and ibuprofen
  674. all-wheel-drive and four-wheel-drive
  675. arlene and emma
  676. arlo and emma
  677. assiduous and industrious
  678. arcade and gallery
  679. arcade and colonnade
  680. army and marines
  681. anxious and aprehensive
  682. apprehend and comprehend
  683. adapt and adept
  684. anxious and apprehensive
  685. average and typical
  686. australia and united-stages
  687. australia and united-states
  688. analog-multimeter and digital-multimeter
  689. airconditioner and dehumidifier
  690. apples and orange
  691. astral and celestial
  692. acute-eczema and contact-dermatitis
  693. alpha-hydroxy and hyluronic-acid
  694. algae and angiosperms
  695. asteroid and comet
  696. apartment and condomedium
  697. axiology and epistemology
  698. axiology and logic
  699. acerbic and cynical
  700. antihhistimine and decongestant
  701. apple-5c and galaxy-s5
  702. apple and mel-brooks-the-producers
  703. apple and mel-brooks
  704. abuse and rebuke
  705. apples and oranges
  706. activity-diagram and sequence-diagram
  707. ambiguous and nebulous
  708. american-pale-ale and india-pale-ale
  709. accontant and cashier
  710. accountant and cashier
  711. aristocrat and noble
  712. advil and asprin
  713. attribute and chatacterics
  714. automobile and automotive
  715. alveoli and bronchioles
  716. aspirin and ibuprofin
  717. austarlia and congo
  718. australia and congo
  719. apartel-condominium and resort
  720. allogation and disclosure
  721. apple and smsung
  722. alleviate and ameliorate
  723. alteration and reconfiguration
  724. alteration and re-configuration
  725. arrange and organize
  726. antisocial and intrevert
  727. ab and ap
  728. american-psychological-association and modern-language-association
  729. arthritis and bursitus
  730. abase and debase
  731. apple-4s and samsung-galaxy-s4
  732. alliance and confederation
  733. arrogant and egocentric
  734. anterior-resection and sigmoid-colectomy
  735. autonous-clg and government-clg
  736. able and compare
  737. autonomy and independent
  738. a-h-ayer and c-l-stevenson
  739. aj-ayer and cl-stevenson
  740. autarch and dictator
  741. avodart and proscar
  742. agitated and irritable
  743. astigmatisum and stigmatisum
  744. apple and furnace
  745. amenity and facilities
  746. amenity and facility
  747. apple and microsoft
  748. arenas and theaters
  749. africa and america
  750. anarchy and oligarchic
  751. allegation and averement
  752. acrylic and nylon
  753. asteroid and meteoroid
  754. asteroid and planetoid
  755. abate and alleviate
  756. adsense and amazon-associate
  757. android and ios
  758. absolute-assignment and irrevocable-assignment
  759. africa and asia
  760. amoral and immoral
  761. abolish and demolish
  762. assumption and consideration
  763. absolutist and c
  764. aerobic-exercise and fitness-exercise
  765. america and india
  766. apple and melon
  767. american-revolution and columbus
  768. american-revolution and political-culture-during-the-time-of-columbus
  769. apple and book
  770. apple and google
  771. assuage and palliate
  772. against-immigration and for-immigration
  773. absolute-age and relative-age
  774. atom and quark
  775. aweber and mailchimp
  776. adolf-hitler and kim-jung-il
  777. allegory and metaphor
  778. alien and people
  779. all and whole
  780. auspicious and suspicious
  781. activity-diagram and state-diagram
  782. amoxicillian and pennicillian
  783. amoxicillin and penicillin
  784. apheresis and transfusion
  785. anthropology and natural-sciences
  786. amorous and horny
  787. amateur and professional
  788. apropos and pertinent
  789. assassinate and murder
  790. americans and diebetes
  791. astute and incisive
  792. acute and ingenious
  793. acute and incisive
  794. ambiguity and opportunity
  795. abstruse and subtle
  796. anaphora and polysyndeton
  797. antinomy and paradox
  798. angiogram and angioplasty
  799. abeyance and abjure
  800. avodart and finasteride
  801. at and in
  802. aptitude and dexterity
  803. acrylic-paint and enamel-paint
  804. air-mass and front
  805. admiration and desire
  806. admire and desire
  807. ada and derin
  808. affidavit and contract
  809. alluvial-plains and sea-stacks
  810. approve and authorise
  811. argumentative-writing and discursive-writing
  812. affidavit and certificate-of-compliance
  813. affidavit and compliance-certification
  814. anthroposystem and ecosystem
  815. association and club
  816. atorvastoma and crestor
  817. aggravate and exacerbate
  818. affiliate and merchant
  819. alpaca and llama
  820. alpha-hydroxy-acid and glycolic-acid
  821. attributes and characteristics
  822. affection and tenderness
  823. accommodate and helpful
  824. affect and emotion
  825. allograft and alloplast
  826. aisle and lane
  827. asbestos and emphysema
  828. alligator and crocodiles
  829. apple and life
  830. apple and oranges
  831. abnormal and bizarre
  832. adaptive-immunity and inflammation
  833. amd and intel
  834. ac-motor and dc-motor
  835. asbestosis and silicosis
  836. autonomy and free-will
  837. ascus and basidium
  838. alkaline-earth-metal-group and alkaline-metal-group
  839. alkaline and alkaline-earth
  840. aim-at and aim-to
  841. audition and tryout
  842. are and is
  843. among and amongst
  844. a-while and awhile
  845. assumption and preassumption
  846. avenue and street
  847. atomic-bomb and hydrogen-bomb
  848. alone and money
  849. actions and tactics
  850. adjustment and correction
  851. autogenous-welding and mig-welding
  852. ability and capability
  853. agile and waterfall
  854. agile-development and waterfall-development
  855. assumptions and presupposition
  856. angiosperm and fungi
  857. anime and cartoon
  858. authorize and deputize
  859. appendix and bibliography
  860. affect and undergo
  861. aei and ou
  862. animation and cartoon
  863. assume and suppose
  864. age and mature
  865. above and over
  866. ambition and driven
  867. ainsi and donc
  868. anchovies and sardines
  869. aquamarine and blue-topaz
  870. airbus and boeing
  871. apps and widgets
  872. apple-s6-phone and galaxay-note-s4
  873. accountability and responsibility
  874. archae and bacteria
  875. abate and abrogate
  876. anoxia and asphyxia
  877. autarchy and autonomy
  878. android and cyborg
  879. apricot-kernel-oil and apricot-seed-oil
  880. antithesis and paradox
  881. adenoma and polyp
  882. astronomy and star-gazing
  883. adore and fond
  884. asymetric and asymetrical
  885. asymmetric and asymmetrical
  886. appeal and dispute
  887. alien and demon
  888. and and or
  889. alabama-fireworks and georgia-fireworks
  890. announciated and pronounciation
  891. africa and american
  892. apostate and proselytize
  893. arena and colleseum
  894. apple and penis
  895. asthma and brinchiolitis
  896. asthma and bronchialitis
  897. asap and stat
  898. assurance and reassurance
  899. artifacts and fossils
  900. actual and factual
  901. actually and factual
  902. accurate and factual
  903. activity-diagram and work-flows-diagram
  904. attention and intention
  905. a-chemical-radical and polyatomic-ion
  906. alveolar and fricative
  907. apple and orange
  908. anole and iguana
  909. aramids and nylon
  910. allograft and homograft
  911. appointing and appointment
  912. agricultural-science and agriculture-or-farming
  913. apherisis and dialsis
  914. acquire and orange
  915. acquire and derive
  916. animal and man
  917. antithesis and dichotomy
  918. aboriginal and torres-strait-islanders
  919. a and an
  920. attractive and good-looking
  921. attractive and pretty
  922. aircraft and airplane
  923. antiquarianism and archaeology
  924. although and notwithstanding
  925. active-duty and army-reserve
  926. apple-ipad-mini and apple-ipod
  927. amerasian and vietnamese-girlfriend-1972
  928. apple-cider-vinegar and malt-vinegar
  929. affair and event
  930. argument and thesis
  931. artificial-intellegence and artificial-neural-network