ascendency vs. control
adulthood vs. maturity
achievability vs. attainability
achievability vs. attainableness
atypicality vs. untypicality
alloy vs. metal
alloy vs. debase
aberrance vs. deviance
aberrancy vs. deviance
affluence vs. richness
ateleiosis vs. ateliosis
aridness vs. thirstiness
alcapton vs. alkapton
atom vs. speck
atonicity vs. atony
atonia vs. atonicity
amyotonia vs. atonicity
asthenia vs. astheny
alkali vs. base
acaracide vs. acaricide
acetone vs. propanone
acetylene vs. ethyne
acetylene vs. alkyne
Al vs. aluminum
Al vs. aluminium
americium vs. curium
arsenic vs. ratsbane
almandine vs. almandite
arsenopyrite vs. mispickel
acetaldehyde vs. ethanal
acetamide vs. ethanamide
alkene vs. olefine
alkene vs. olefin
aniline vs. phenylamine
asafetida vs. asafoetida
amine vs. aminoalkane
atar vs. attar
athar vs. attar
attar vs. ottar
acylglycerol vs. glyceride
alkane vs. paraffin
acrolein vs. propenal
acrylate vs. propenoate
acrylonitrile vs. propenonitrile
alizarin vs. alizarine
antivenene vs. antivenin
alloantibody vs. isoantibody
amylum vs. starch
anatoxin vs. toxoid
alcahest vs. alkahest
albuminoid vs. scleroprotein
aventurine vs. sunstone
aminotransferase vs. transaminase
aminopherase vs. transaminase
afterlife vs. hereafter
autumn vs. fall
aestivate vs. estivate
arise vs. rise
arise vs. lift
awake vs. wake
arouse vs. wake
arouse vs. stimulate
arouse vs. raise
awaken vs. wake
anaesthetize vs. anesthetize
anaesthetise vs. anesthetize
anaesthetize vs. anesthetise
anaesthetise vs. anesthetise
arrange vs. dress
arrange vs. put
arrange vs. stage
arrange vs. set
arrange vs. format
anoint vs. oil
alleviate vs. relieve
alleviate vs. ease
assuage vs. relieve
assuage vs. slake
assuage vs. quench
allay vs. assuage
assuage vs. gentle
administer vs. dispense
administer vs. deal
administer vs. administrate
alter vs. neuter
alter vs. change
alter vs. interpolate
alter vs. falsify
adopt vs. assume
assume vs. take
assume vs. presume
assume vs. sham
assume vs. strike
assume vs. seize
assume vs. usurp
arrogate vs. assume
acquire vs. get
acquire vs. take
acquire vs. develop
acquire vs. gain
anele vs. oil
animalize vs. brutalize
animalize vs. brutalise
animalise vs. brutalize
animalise vs. brutalise
accrue vs. fall
accumulate vs. gather
accumulate vs. collect
amass vs. gather
absorb vs. assimilate
assimilate vs. ingest
assimilate vs. imbibe
adjust vs. conform
adapt vs. adjust
adjust vs. correct
adjust vs. align
adjust vs. aline
accommodate vs. adapt
aggravate vs. exacerbate
aggravate vs. exasperate
aggravate vs. worsen
add vs. tally
add vs. supply
adjoin vs. contact
adjoin vs. march
addle vs. puddle
aerate vs. oxygenate
ammoniate vs. ammonify
amend vs. remedy
amend vs. better
activate vs. trip
ameliorate vs. better
acetify vs. acidify
acetify vs. sour
alkalify vs. alkalize
alkalize vs. basify
alkalify vs. alkalise
alkalise vs. basify
accustom vs. habituate
abridge vs. contract
acerbate vs. envenom
acerbate vs. embitter
afflict vs. smite
abbreviate vs. contract
abate vs. slack
amplify vs. inflate
amplify vs. magnify
acidify vs. sour
anneal vs. temper
appreciate vs. apprize
appreciate vs. apprise
appreciate vs. revalue
appreciate vs. prize
advise vs. apprize
apprize vs. notify
advise vs. apprise
apprise vs. notify
antedate vs. predate
accommodate vs. reconcile
accommodate vs. conciliate
accommodate vs. oblige
accommodate vs. house
accommodate vs. suit
accommodate vs. hold
atomize vs. nuke
atomise vs. nuke
asphyxiate vs. stifle
asphyxiate vs. smother
auspicate vs. forecast
adjourn vs. recess
adjourn vs. retire
anticipate vs. expect
anticipate vs. previse
anticipate vs. foreknow
anticipate vs. foresee
anticipate vs. call
anticipate vs. counter
adopt vs. take
adopt vs. embrace
adopt vs. dramatise
adopt vs. dramatize
adopt vs. follow
acclimate vs. acclimatize
acclimate vs. acclimatise
absorb vs. engage
absorb vs. plunge
absorb vs. draw
admix vs. commingle
accelerate vs. speed
appear vs. look
appear vs. seem
aerify vs. vaporize
aerify vs. vaporise
align vs. coordinate
annihilate vs. eliminate
adhere vs. stick
acetylate vs. acetylize
acetylate vs. acetylise