Word Usage & Commonly Confused WordsHESI A2 cheat sheet

Precision pairs

7 key facts 5 practice questions Reviewed Oct 2026

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Homophones

their / there / they're
your / you're · its / it's · whose / who's

Meaning Pairs

affect (verb) / effect (noun)
accept / except · than / then
principal (person or main) / principle (rule)

Quantity

fewer for countable · less for bulk amounts

Clinical

mucus (noun) / mucous (adjective)

Key takeaway

Precision pairs

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What is the correct plural of 'hoof'?

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