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. adenoma and polyp
  197. arthritis and bursitis
  198. arthritis and rheumatoid-arthritis
  199. adhd and autism
  200. acid-reflux and heartburn
  201. arena and colliseum
  202. arena and field-house
  203. advance and advancement
  204. accrued-revenue and deferred-revenue
  205. asthma and copd
  206. altruistic and amiable
  207. arrogant and haughty
  208. adenoma and carcinoma
  209. acid-reflux and ulcer
  210. ambiguity and vagueness
  211. assurance and audit
  212. audit and review
  213. arrogant and contemptuous
  214. assessment and evaluation
  215. assessment and screening
  216. apple and orange
  217. assault and battery
  218. abatement and remediation
  219. abatement and exemption
  220. abrogate and overrule
  221. accomplice and conspirator
  222. accounts-payable and accounts-receivable
  223. accretion and amortization
  224. anionic-polymarization and cationic-polymarizion
  225. awesome and awestruck
  226. arrow-root and casava
  227. absurdism and existentialism
  228. autobiography and memoir
  229. agave and honey
  230. agriculture and farming
  231. acrylic and polyester
  232. adoration and appreciation
  233. apple-ipad-3 and apple-ipad2
  234. ability and qualified
  235. authorize and entrust
  236. antique and curio
  237. austerity and thrifty
  238. aeroplane and aircraft
  239. alternating-current and direct-current
  240. assumption and proposition
  241. adjective and adverb
  242. arenas and stadium
  243. acrylic and polystyrene
  244. accusation and allegation
  245. autotrophic-eukaryotes and hetrotrophic-eukaryotes
  246. assumption-of-risk and volenti-non-fit-injuria
  247. aquired-immunity and natural-immunity
  248. absolute-assignment and collateral-assignment
  249. appraised-value and assessed-value
  250. abdominoplasty and abdominoscopy
  251. abdominoplasty and tummy-tuck
  252. abdominoplasty and lipoplasty
  253. acetaminophen and ibuprofin
  254. allergic-conjunctivitis and pink-eye
  255. alopecia and male-pattern-baldness
  256. analgesia and analgesic
  257. antibiotic and probiotic
  258. assumption and principle
  259. antisocial-personality-disorder and multiple-personality-disorder
  260. antisocial and introvert
  261. apheresis and blood-transfusion
  262. astigmatism and cataracts
  263. asymmetry and symmetry
  264. anxiety and bipolar
  265. alpha-hydroxy-acid and retinol
  266. acid-rinse and skin-peel
  267. algae and seaweed
  268. ayurveda and traditional-chinese-medicine
  269. assurance and reinsurance
  270. animal-antibiotics and human-antibiotics
  271. attitude and personality
  272. attitude and disposition
  273. abdominoplasty and panniculectomy
  274. anterior-resection and ap-resection
  275. anterior-resection and hartmann-procedure
  276. aquit and exonerate
  277. ailment and malady
  278. adenocarcinoma and mesothelioma
  279. accutane and acne-laser-treatment
  280. accutane and retin-a
  281. accutane and spironolactone
  282. annuity-settlement and lump-sum
  283. anglicana and orthodox
  284. anger and passion
  285. allergy and illness
  286. allograft and autograft
  287. adaptive and responsive
  288. arborizing-veins and spider-veins
  289. adware and malware
  290. apple-brandy and pomance-brandy
  291. anonymous-function and closure
  292. arthritis and osteoarthritis
  293. avant-garde and futurism
  294. avante-garde and odalisque
  295. arena and music-hall
  296. ameliorate and pacify
  297. arid and sere
  298. adam-smith and john-maynard-keynes
  299. adviser and benefactor
  300. advise and exhort
  301. avante-garde and forefront
  302. avante-garde and metropolis
  303. adapt and adopt
  304. avante-garde and courtesan
  305. await and wait
  306. argue and wrangle
  307. abide and resided
  308. annuity and structured-settlement
  309. ascertain and assert
  310. annuity and installment-note
  311. annuity-due and immediate-annuity
  312. absolutism and dogmatic
  313. a-cash-balance-benefit-program and a-defined-benefit-program
  314. authoritarianism and dogmatic
  315. activty-diagram and sequence-diagram
  316. analysis and synthesis
  317. abstraction and encapsulation
  318. allele and gene
  319. ass and donkey
  320. aim and purpose
  321. axiom and hypothesis
  322. absolutism and totalitarian
  323. advocate and recommend
  324. affluent and wealthy
  325. aware and mindful
  326. apple and banana
  327. aramids and polyamide
  328. aristocracy and oligarchy
  329. annuity and lump-sum-payment
  330. aristocracy and monarchy
  331. amenities and facilities
  332. axiology and metaphysics
  333. army and military
  334. attribute and characteristic
  335. abhor and hate
  336. aspect and characteristic
  337. access-2013 and dbase-8-plus
  338. alpha-hydroxy and retinol
  339. agreement and protocol
  340. amazing and phenomenal
  341. agreement and legal-protocol
  342. adopt and pass
  343. assyria and persia
  344. agile and rup
  345. abnormal and irregular
  346. analingus and cunnalingus
  347. animals and people
  348. aid and amenity
  349. amenity and appliance
  350. allele and trait
  351. alexander and marcus
  352. anode and cathode
  353. abate and attenuate
  354. alleviate and attenuate
  355. aspnet and php
  356. arts and athletics
  357. ambition and apirant
  358. alicit and derive
  359. auber and wasp
  360. ambivalence and contradiction
  361. aware and conscious
  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. antithesis and paradox
  505. aphorism and epigram
  506. area and arena
  507. accountance and accounting
  508. accountancy and accounting
  509. accounting and bookkeeping
  510. astimatism and cataract
  511. american-days and romanian-days
  512. autonomy and self-determination
  513. arartment and house
  514. apartment and house
  515. adhere and comply
  516. analgesic and anesthesia
  517. acquitted and innocent
  518. aliens and demons
  519. axe and hammer
  520. arsonist and pyromaniac
  521. abuse and misuse
  522. arrogant and braggart
  523. apple and presumptuous
  524. apple and complacent
  525. abate and abdicate
  526. apple-tree and banana-tree
  527. ak47 and ak74
  528. apathy and empathy
  529. arena and fieldhouse
  530. arrogant and self-center
  531. architect and architectural-engineer
  532. allow and permit
  533. aggravation and agitation
  534. arcane and esoteric
  535. act and sat
  536. activity-diagram and flow-chart
  537. apes and monkeys
  538. amelia-earhart and the-wright-brothers
  539. android and apple-company
  540. apart and away
  541. antecedent and predecessor
  542. attached and enclosed
  543. assumption and belief
  544. atom and molecule
  545. acrylic-fabric and polyester-fabric
  546. ancient-greek and greek
  547. assignment and set-over
  548. abogated and abogating
  549. azithromycin and erythromycin
  550. arrogant and pompous
  551. agriculture and husbandry
  552. applied-linguistics and syntax
  553. admissibility and relevancy
  554. absolustism and autocracy
  555. applied-science and pure-science
  556. autonomy and freedom
  557. arcylic and cellulose-acecate
  558. augumented-reality and virtual-reality
  559. augumented-reality and mixed-reality
  560. american-central-business-district and european-central-business-district
  561. apple and ravine
  562. agreeable and amenable
  563. arrogant and self-assured
  564. application-programming-interface and database
  565. alternative and option
  566. array and vector
  567. aim and objective
  568. announcement and enunciation
  569. ageing-oven and annealing-furnace
  570. answer and problem
  571. apparatus and device
  572. acetal and nylon
  573. algeria and algiers
  574. angina and atherosclerosis
  575. australian-shephard and border-collie
  576. advil and ibuprofen
  577. adam-smith and john-keynes
  578. algebra and calculus
  579. aneurysm and embolism
  580. analogy and parable
  581. accounts-receivable and billing-collections
  582. advice and advise
  583. a and one
  584. admonish and castigate
  585. apple and stupidity
  586. android and windows
  587. affirmation and oath
  588. affidavit and affirmation
  589. affirmation and declaration
  590. a-little and little
  591. apple-imac and macbook-pro
  592. ambiguous and ambivalent
  593. atheism and skepticism
  594. adam-smith and john-stuart-mill
  595. acerbic and acrimonious
  596. assessment and estimate
  597. access and hills
  598. abbreviation and acronym
  599. attitude and belief
  600. aaron-beck and bf-skinner
  601. autotrophs and hetrotrophs
  602. auk and penguin
  603. auk and cormorant
  604. acquired and enquired
  605. ashlee-simpson and jessica-simpson
  606. assume and presume
  607. academic-specialty and academic-track
  608. aristocracy and totalitarianism
  609. aw-of-diminishing-returns and ceteris-paribus
  610. asthenosphere and lithosphere
  611. aspiration and expectation
  612. assassination and murder
  613. asynchronous-transfer-mode and frame-relay
  614. accept and except
  615. allusion and illusion
  616. any-one and anyone
  617. assure and insure
  618. assure and ensure
  619. apprehensive and ominously
  620. antihistamines and decongestant
  621. abstract-class and inheritance
  622. adjacents and consectutive
  623. activated-complex and reaction-intermediate
  624. approach and strategy
  625. a and orange
  626. actual-cash-value and fair-market-value
  627. apparel and fashion
  628. ambivalence and paradox
  629. aa and na
  630. abate and remediate
  631. abatement and remeidation
  632. alive and live
  633. acquitted and not-guilty
  634. acrylic-nails and gel-nails
  635. acrylic and gel
  636. angiogram and arteriogram
  637. allusion and delusion
  638. altruism and generosity
  639. alittle and little
  640. apple-iphone-5c and galaxy-s5
  641. affirm and warrant
  642. apple-5c and samsung-galaxy4
  643. abraxane and taxetere
  644. awesome-guy and cool-guy
  645. asphalt and macadam
  646. abundant and redundant
  647. antecedent and anterior
  648. antecednt and anterior
  649. asthma and bronchialitis
  650. acrylic-fiber and polyester-fiber
  651. apple-is-solid and orange-is-juicey
  652. arc-lamp and light-bulb
  653. annuity-due and ordinary-due
  654. appliance and gadget
  655. analysis and deductuve-reasoning
  656. accounts-receivable and collections
  657. anorexia and bulimia
  658. amnion and placenta
  659. android-tablet and windows-8-tablet
  660. abraham-lincoln and barrack-obama
  661. apprentice and novice
  662. apple and name
  663. apprentice and protege
  664. appreciation and commendation
  665. advertising and promoting
  666. ayurveda and tcm
  667. alaskan-husky and siberian-husky
  668. apple and car
  669. apple and red
  670. admirable and admiring
  671. almond and peanut
  672. adolf-hitler and josef-stalin
  673. animal-cell and plant-cell
  674. anthroplogy and archeology
  675. acteminophen and ibuprofen
  676. all-wheel-drive and four-wheel-drive
  677. arlene and emma
  678. arlo and emma
  679. assiduous and industrious
  680. arcade and gallery
  681. arcade and colonnade
  682. army and marines
  683. anxious and aprehensive
  684. apprehend and comprehend
  685. adapt and adept
  686. anxious and apprehensive
  687. average and typical
  688. agricultural-science and agriculture-or-farming
  689. australia and united-stages
  690. australia and united-states
  691. analog-multimeter and digital-multimeter
  692. airconditioner and dehumidifier
  693. apples and orange
  694. astral and celestial
  695. acute-eczema and contact-dermatitis
  696. alpha-hydroxy and hyluronic-acid
  697. algae and angiosperms
  698. asteroid and comet
  699. apartment and condomedium
  700. axiology and epistemology
  701. axiology and logic
  702. acerbic and cynical
  703. antihhistimine and decongestant
  704. apple-5c and galaxy-s5
  705. apple and mel-brooks-the-producers
  706. apple and mel-brooks
  707. abuse and rebuke
  708. apples and oranges
  709. activity-diagram and sequence-diagram
  710. ambiguous and nebulous
  711. accontant and cashier
  712. accountant and cashier
  713. aristocrat and noble
  714. advil and asprin
  715. attribute and chatacterics
  716. automobile and automotive
  717. alveoli and bronchioles
  718. aspirin and ibuprofin
  719. austarlia and congo
  720. australia and congo
  721. apartel-condominium and resort
  722. allogation and disclosure
  723. apple and smsung
  724. alleviate and ameliorate
  725. alteration and reconfiguration
  726. alteration and re-configuration
  727. arrange and organize
  728. antisocial and intrevert
  729. ab and ap
  730. american-psychological-association and modern-language-association
  731. arthritis and bursitus
  732. abase and debase
  733. apple-4s and samsung-galaxy-s4
  734. alliance and confederation
  735. arrogant and egocentric
  736. anterior-resection and sigmoid-colectomy
  737. autonous-clg and government-clg
  738. able and compare
  739. autonomy and independent
  740. a-h-ayer and c-l-stevenson
  741. aj-ayer and cl-stevenson
  742. autarch and dictator
  743. avodart and proscar
  744. agitated and irritable
  745. astigmatisum and stigmatisum
  746. apple and furnace
  747. amenity and facilities
  748. amenity and facility
  749. apple and microsoft
  750. arenas and theaters
  751. africa and america
  752. anarchy and oligarchic
  753. allegation and averement
  754. acrylic and nylon
  755. asteroid and meteoroid
  756. asteroid and planetoid
  757. abate and alleviate
  758. adsense and amazon-associate
  759. android and ios
  760. absolute-assignment and irrevocable-assignment
  761. africa and asia
  762. amoral and immoral
  763. abolish and demolish
  764. assumption and consideration
  765. absolutist and c
  766. aerobic-exercise and fitness-exercise
  767. america and india
  768. apple and melon
  769. american-revolution and columbus
  770. american-revolution and political-culture-during-the-time-of-columbus
  771. apple and book
  772. apple and google
  773. assuage and palliate
  774. against-immigration and for-immigration
  775. absolute-age and relative-age
  776. atom and quark
  777. aweber and mailchimp
  778. adolf-hitler and kim-jung-il
  779. allegory and metaphor
  780. alien and people
  781. all and whole
  782. auspicious and suspicious
  783. activity-diagram and state-diagram
  784. amoxicillian and pennicillian
  785. amoxicillin and penicillin
  786. apheresis and transfusion
  787. anthropology and natural-sciences
  788. amorous and horny
  789. amateur and professional
  790. apropos and pertinent
  791. assassinate and murder
  792. americans and diebetes
  793. astute and incisive
  794. acute and ingenious
  795. acute and incisive
  796. ambiguity and opportunity
  797. abstruse and subtle
  798. anaphora and polysyndeton
  799. antinomy and paradox
  800. angiogram and angioplasty
  801. abeyance and abjure
  802. avodart and finasteride
  803. at and in
  804. aptitude and dexterity
  805. acrylic-paint and enamel-paint
  806. air-mass and front
  807. admiration and desire
  808. admire and desire
  809. ada and derin
  810. affidavit and contract
  811. alluvial-plains and sea-stacks
  812. approve and authorise
  813. argumentative-writing and discursive-writing
  814. affidavit and certificate-of-compliance
  815. affidavit and compliance-certification
  816. anthroposystem and ecosystem
  817. association and club
  818. atorvastoma and crestor
  819. aggravate and exacerbate
  820. affiliate and merchant
  821. alpaca and llama
  822. alpha-hydroxy-acid and glycolic-acid
  823. attributes and characteristics
  824. affection and tenderness
  825. accommodate and helpful
  826. affect and emotion
  827. allograft and alloplast
  828. aisle and lane
  829. asbestos and emphysema
  830. alligator and crocodiles
  831. apple and life
  832. apple and oranges
  833. abnormal and bizarre
  834. adaptive-immunity and inflammation
  835. amd and intel
  836. alveolar and fricative
  837. ac-motor and dc-motor
  838. asbestosis and silicosis
  839. autonomy and free-will
  840. ascus and basidium
  841. alkaline-earth-metal-group and alkaline-metal-group
  842. alkaline and alkaline-earth
  843. aim-at and aim-to
  844. audition and tryout
  845. are and is
  846. among and amongst
  847. a-while and awhile
  848. assumption and preassumption
  849. avenue and street
  850. atomic-bomb and hydrogen-bomb
  851. alone and money
  852. actions and tactics
  853. adjustment and correction
  854. autogenous-welding and mig-welding
  855. ability and capability
  856. agile and waterfall
  857. agile-development and waterfall-development
  858. assumptions and presupposition
  859. angiosperm and fungi
  860. anime and cartoon
  861. authorize and deputize
  862. appendix and bibliography
  863. affect and undergo
  864. aei and ou
  865. animation and cartoon
  866. assume and suppose
  867. age and mature
  868. above and over
  869. ambition and driven