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. apple and orange
  216. assault and battery
  217. abatement and remediation
  218. abatement and exemption
  219. abrogate and overrule
  220. accomplice and conspirator
  221. accounts-payable and accounts-receivable
  222. accretion and amortization
  223. anionic-polymarization and cationic-polymarizion
  224. awesome and awestruck
  225. arrow-root and casava
  226. absurdism and existentialism
  227. autobiography and memoir
  228. agave and honey
  229. agriculture and farming
  230. acrylic and polyester
  231. adoration and appreciation
  232. apple-ipad-3 and apple-ipad2
  233. ability and qualified
  234. authorize and entrust
  235. antique and curio
  236. austerity and thrifty
  237. aeroplane and aircraft
  238. alternating-current and direct-current
  239. assumption and proposition
  240. adjective and adverb
  241. arenas and stadium
  242. acrylic and polystyrene
  243. accusation and allegation
  244. autotrophic-eukaryotes and hetrotrophic-eukaryotes
  245. assumption-of-risk and volenti-non-fit-injuria
  246. aquired-immunity and natural-immunity
  247. absolute-assignment and collateral-assignment
  248. appraised-value and assessed-value
  249. abdominoplasty and abdominoscopy
  250. abdominoplasty and tummy-tuck
  251. abdominoplasty and lipoplasty
  252. acetaminophen and ibuprofin
  253. allergic-conjunctivitis and pink-eye
  254. alopecia and male-pattern-baldness
  255. analgesia and analgesic
  256. antibiotic and probiotic
  257. assumption and principle
  258. antisocial-personality-disorder and multiple-personality-disorder
  259. antisocial and introvert
  260. apheresis and blood-transfusion
  261. astigmatism and cataracts
  262. asymmetry and symmetry
  263. anxiety and bipolar
  264. alpha-hydroxy-acid and retinol
  265. acid-rinse and skin-peel
  266. algae and seaweed
  267. ayurveda and traditional-chinese-medicine
  268. assurance and reinsurance
  269. animal-antibiotics and human-antibiotics
  270. attitude and personality
  271. attitude and disposition
  272. abdominoplasty and panniculectomy
  273. anterior-resection and ap-resection
  274. anterior-resection and hartmann-procedure
  275. aquit and exonerate
  276. ailment and malady
  277. adenocarcinoma and mesothelioma
  278. accutane and acne-laser-treatment
  279. accutane and retin-a
  280. accutane and spironolactone
  281. annuity-settlement and lump-sum
  282. anglicana and orthodox
  283. anger and passion
  284. allergy and illness
  285. allograft and autograft
  286. adaptive and responsive
  287. arborizing-veins and spider-veins
  288. adware and malware
  289. apple-brandy and pomance-brandy
  290. anonymous-function and closure
  291. arthritis and osteoarthritis
  292. avant-garde and futurism
  293. avante-garde and odalisque
  294. arena and music-hall
  295. ameliorate and pacify
  296. arid and sere
  297. adam-smith and john-maynard-keynes
  298. adviser and benefactor
  299. advise and exhort
  300. avante-garde and forefront
  301. avante-garde and metropolis
  302. adapt and adopt
  303. avante-garde and courtesan
  304. await and wait
  305. argue and wrangle
  306. abide and resided
  307. annuity and structured-settlement
  308. ascertain and assert
  309. annuity and installment-note
  310. annuity-due and immediate-annuity
  311. absolutism and dogmatic
  312. a-cash-balance-benefit-program and a-defined-benefit-program
  313. authoritarianism and dogmatic
  314. activty-diagram and sequence-diagram
  315. analysis and synthesis
  316. abstraction and encapsulation
  317. allele and gene
  318. ass and donkey
  319. aim and purpose
  320. axiom and hypothesis
  321. absolutism and totalitarian
  322. advocate and recommend
  323. affluent and wealthy
  324. aware and mindful
  325. apple and banana
  326. aramids and polyamide
  327. aristocracy and oligarchy
  328. annuity and lump-sum-payment
  329. aristocracy and monarchy
  330. amenities and facilities
  331. axiology and metaphysics
  332. army and military
  333. attribute and characteristic
  334. abhor and hate
  335. aspect and characteristic
  336. access-2013 and dbase-8-plus
  337. alpha-hydroxy and retinol
  338. agreement and protocol
  339. amazing and phenomenal
  340. agreement and legal-protocol
  341. adopt and pass
  342. assyria and persia
  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. ambigious and cryptic
  362. ambiguous and cryptic
  363. aquitted and not-guilty
  364. acquit and not-guilty
  365. assume and surmise
  366. altruitic and magnanimous
  367. altruistic and magnanimous
  368. advil and motrin
  369. animal and human
  370. alice and andrew
  371. american-pear and korean-pear
  372. air-mattress and coil-mattress
  373. acrylic and mylar
  374. arthritis and pseudogout
  375. administration and management
  376. axiom and construct
  377. adsl and dsl
  378. arse and elbow
  379. advil and alive
  380. apple and taco
  381. annoyed and irritated
  382. accrual and entitlement
  383. antibodies and immunoglobulin
  384. actor and thespian
  385. aquaeous-humor and vitreous-humor
  386. aqueous-humor and vitreous-humor
  387. an-art-gallery and museum
  388. art-gallery and museum
  389. abb and sbb
  390. adjective and attribute
  391. alzheimers and dimensia
  392. android and iphone
  393. alzheimers and senile-dementia
  394. anemia-of-chronic-disease and pernicious-anemis
  395. anemia-of-chronic-disease and pernicious-anemia
  396. android-cell-phone and apple-cell-phone
  397. aeroplane and jet
  398. apprehend and grasp
  399. alpha-hydroxy-acids and retinol
  400. acid and lsd
  401. arrogance and confidence
  402. arrogance and pride
  403. assign and delegate
  404. affliction and misfortune
  405. aeroplane and helicaptor
  406. aeronautical and mechanical
  407. aeronautical-field and mechanical-field
  408. apple and white
  409. agoraphobia and social-phobia
  410. ambitious and driven
  411. agitated and irritated
  412. arrogant and egotistical
  413. and and of
  414. almond and penut
  415. ask and question
  416. acquit and justify
  417. alternator and motor
  418. audience and spectator
  419. attrition and detrition
  420. appreciation and expectation
  421. anticipate and expect
  422. adoration and love
  423. antibiotics and toxins
  424. adherence and adhesion
  425. acquire and obtain
  426. apple-ipad-computer and apple-macbookpro-computer
  427. assessment and review
  428. algebraic-expression and polynomial
  429. acerbic and acrid
  430. acidulous and acrimonious
  431. ardent and vehement
  432. adb-port and serial-port
  433. adb-port and appletalk
  434. abs and arms
  435. apple-imac and apple-pro
  436. angiography and arteriogram
  437. apple-i-phone-5 and galaxy-s4
  438. agile and ductile
  439. amish and mennonite
  440. absolutist and fanatic
  441. autocracy and commonwealth
  442. apricots and peaches
  443. apple and pear
  444. apple and batman
  445. aashray and umeed
  446. apricot and peach
  447. amend and mend
  448. agitation and irritation
  449. agitation and friction
  450. agitation and pain
  451. agitation and lubricity
  452. agitation and restlessness
  453. agitation and boredom
  454. agriculture and former
  455. autocrat and despot
  456. antihistamine and sudafed
  457. antihistamine and decongestant
  458. axiom and law
  459. acerb and acerbic
  460. apr and lar
  461. apple-iphone-5c and samsung-galaxy-s4
  462. apartment and studio-apartment
  463. ataxia and atrophy
  464. affable and amiable
  465. alu and cpu
  466. acetominophen and ibuprophen
  467. adverb and conjunction
  468. atomic-bomb and nuclear-bomb
  469. anthropology and archaeology
  470. apple-cider and apple-juice
  471. asynchronous and syncronous
  472. atypical and typical
  473. atypical and non-conformist
  474. ambiguous and vague
  475. apple and samsung
  476. avenge and revenge
  477. abate and abridge
  478. agile and nimble
  479. alzheimers and dementia
  480. adam-smith and karl-heinrich-marx
  481. awareness and consciousness
  482. atomic-mass and atomic-weight
  483. arminian and reformed
  484. almond-milk and soy-mild
  485. almond-milk and soy-milk
  486. asteroid and meteor
  487. autotrophs and heterotrophs
  488. am-radio and fm-radio
  489. agate and onyx
  490. active-ftp and passive-ftp
  491. agate and onzy
  492. agate and onxy
  493. auspicious and propitious
  494. answers and findings
  495. answer and finding
  496. attack and reproach
  497. aspect and thing
  498. anxiety and frustration
  499. accordion and concertina
  500. arena and coliseum
  501. apparatus-gymnastics and tumbling
  502. agreeable and discordant
  503. aphorism and epigram
  504. area and arena
  505. accountance and accounting
  506. accountancy and accounting
  507. accounting and bookkeeping
  508. astimatism and cataract
  509. american-days and romanian-days
  510. autonomy and self-determination
  511. arartment and house
  512. apartment and house
  513. adhere and comply
  514. analgesic and anesthesia
  515. acquitted and innocent
  516. aliens and demons
  517. axe and hammer
  518. arsonist and pyromaniac
  519. abuse and misuse
  520. arrogant and braggart
  521. apple and presumptuous
  522. apple and complacent
  523. abate and abdicate
  524. apple-tree and banana-tree
  525. ak47 and ak74
  526. apathy and empathy
  527. arena and fieldhouse
  528. arrogant and self-center
  529. architect and architectural-engineer
  530. allow and permit
  531. aggravation and agitation
  532. arcane and esoteric
  533. act and sat
  534. activity-diagram and flow-chart
  535. apes and monkeys
  536. amelia-earhart and the-wright-brothers
  537. android and apple-company
  538. apart and away
  539. antecedent and predecessor
  540. attached and enclosed
  541. assumption and belief
  542. atom and molecule
  543. acrylic-fabric and polyester-fabric
  544. ancient-greek and greek
  545. assignment and set-over
  546. abogated and abogating
  547. azithromycin and erythromycin
  548. arrogant and pompous
  549. agriculture and husbandry
  550. applied-linguistics and syntax
  551. admissibility and relevancy
  552. absolustism and autocracy
  553. applied-science and pure-science
  554. autonomy and freedom
  555. arcylic and cellulose-acecate
  556. augumented-reality and virtual-reality
  557. augumented-reality and mixed-reality
  558. american-central-business-district and european-central-business-district
  559. apple and ravine
  560. agreeable and amenable
  561. arrogant and self-assured
  562. application-programming-interface and database
  563. alternative and option
  564. array and vector
  565. aim and objective
  566. announcement and enunciation
  567. ageing-oven and annealing-furnace
  568. answer and problem
  569. apparatus and device
  570. acetal and nylon
  571. algeria and algiers
  572. angina and atherosclerosis
  573. australian-shephard and border-collie
  574. advil and ibuprofen
  575. adam-smith and john-keynes
  576. algebra and calculus
  577. aneurysm and embolism
  578. analogy and parable
  579. accounts-receivable and billing-collections
  580. advice and advise
  581. a and one
  582. admonish and castigate
  583. apple and stupidity
  584. android and windows
  585. affirmation and oath
  586. affidavit and affirmation
  587. affirmation and declaration
  588. a-little and little
  589. apple-imac and macbook-pro
  590. ambiguous and ambivalent
  591. atheism and skepticism
  592. adam-smith and john-stuart-mill
  593. acerbic and acrimonious
  594. assessment and estimate
  595. access and hills
  596. abbreviation and acronym
  597. attitude and belief
  598. aaron-beck and bf-skinner
  599. autotrophs and hetrotrophs
  600. auk and penguin
  601. auk and cormorant
  602. acquired and enquired
  603. ashlee-simpson and jessica-simpson
  604. assume and presume
  605. academic-specialty and academic-track
  606. aristocracy and totalitarianism
  607. aw-of-diminishing-returns and ceteris-paribus
  608. asthenosphere and lithosphere
  609. aspiration and expectation
  610. assassination and murder
  611. asynchronous-transfer-mode and frame-relay
  612. accept and except
  613. allusion and illusion
  614. any-one and anyone
  615. assure and insure
  616. assure and ensure
  617. apprehensive and ominously
  618. antihistamines and decongestant
  619. abstract-class and inheritance
  620. adjacents and consectutive
  621. activated-complex and reaction-intermediate
  622. approach and strategy
  623. a and orange
  624. actual-cash-value and fair-market-value
  625. apparel and fashion
  626. ambivalence and paradox
  627. aa and na
  628. abate and remediate
  629. abatement and remeidation
  630. alive and live
  631. acquitted and not-guilty
  632. acrylic-nails and gel-nails
  633. acrylic and gel
  634. angiogram and arteriogram
  635. allusion and delusion
  636. altruism and generosity
  637. alittle and little
  638. apple-iphone-5c and galaxy-s5
  639. affirm and warrant
  640. apple-5c and samsung-galaxy4
  641. abraxane and taxetere
  642. awesome-guy and cool-guy
  643. asphalt and macadam
  644. abundant and redundant
  645. antecedent and anterior
  646. antecednt and anterior
  647. acrylic-fiber and polyester-fiber
  648. apple-is-solid and orange-is-juicey
  649. arc-lamp and light-bulb
  650. annuity-due and ordinary-due
  651. appliance and gadget
  652. analysis and deductuve-reasoning
  653. accounts-receivable and collections
  654. anorexia and bulimia
  655. amnion and placenta
  656. android-tablet and windows-8-tablet
  657. abraham-lincoln and barrack-obama
  658. apprentice and novice
  659. apple and name
  660. apprentice and protege
  661. appreciation and commendation
  662. advertising and promoting
  663. ayurveda and tcm
  664. alaskan-husky and siberian-husky
  665. apple and car
  666. apple and red
  667. admirable and admiring
  668. almond and peanut
  669. adolf-hitler and josef-stalin
  670. animal-cell and plant-cell
  671. anthroplogy and archeology
  672. acteminophen and ibuprofen
  673. all-wheel-drive and four-wheel-drive
  674. arlene and emma
  675. arlo and emma
  676. assiduous and industrious
  677. arcade and gallery
  678. arcade and colonnade
  679. army and marines
  680. anxious and aprehensive
  681. apprehend and comprehend
  682. adapt and adept
  683. anxious and apprehensive
  684. average and typical
  685. agricultural-science and agriculture-or-farming
  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. apricot-kernel-oil and apricot-oil
  887. appeal and dispute
  888. alien and demon
  889. and and or
  890. alabama-fireworks and georgia-fireworks
  891. announciated and pronounciation
  892. africa and american
  893. apostate and proselytize
  894. arena and colleseum
  895. apple and penis
  896. asthma and brinchiolitis
  897. asthma and bronchialitis
  898. asap and stat
  899. assurance and reassurance
  900. artifacts and fossils
  901. actual and factual
  902. actually and factual
  903. accurate and factual
  904. activity-diagram and work-flows-diagram
  905. attention and intention
  906. a-chemical-radical and polyatomic-ion
  907. alveolar and fricative