Blue Book of Grammar and Punctuation 2

accept vs. except; ad vs.

ades (fruit drinks), aides (helper), AIDS, aids (helps)
adverseä¸å©ç (unfortunate; strongly opposed) vs. averseåæ (having repugnanceåæ¶)
affect (influence, emotional expression) vs. effect(result)
ail (to be illè¦æ¼) vs. ale (malt beverage more bitter than beeréº¦é)
air, err (make a mistake), heir(who inherits sth.)
aisle (passageway), isle (a small island)
all vs. awl (a tool é¥å)
allot (to parcel out åé) vs a lot
all together vs. altogether (entirely)
altar (pedestal, usually religiousç¥å) vs alter
allude (to refer indirect æç¤º) vs. elude (avoid capture) vs. illude (mislead)
ambiguous (to have more than one meaning) vs. ambivalent (to have mixed feelings)
amicable friendly (refers to things, not peopleåç¦) vs. amiable friendly (refers to peopleå¯äº²)

amount (not countable) vs. number (count)
ante (a bet placed before playèµæ³¨) vs. auntie (affectionate term for a parent's sister)
anxious (to have anxiety or worry) vs. eager (excitedæ¸´æ)
any more (sth. additional or further) vs. anymore (any longer, nowadays)
appraise (to put a value on sth. è¯ä¼°) vs. apprise (to notify)
arc (arch, crescent, half moonåå¼§) vs. ark (a vessel or a refugeæ¹è)
ascent (movement upwardæç») vs. assent (enthusiastic agreement; to agree èµå) vs. consent (agreementåæ)
assistance (help) vs. assistants (people who help)
assumption (an idea not based on evidenceåè®¾) vs. presumption (an idea based on evidenceæ¨å®)assure (to promise or say with confidence ä¿è¯) vs. ensure (to make sure sth. will/won't happenä¿é) vs. insure (to issue an insurance policyä¿é©)
aural (having to do with hearingå¬è§) vs. oral (having to do with the mouth)
awed (in a state of amazement æ¬ ) vs. odd (unusual; opposite of even when referring to numbers)