NSAID vs anti-inflammatory drug

NSAID and anti-inflammatory drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
NSAID	Yes	No	No	No
anti-inflammatory drug	Yes	No	No	No

As nouns, anti-inflammatory drug is a hypernym of NSAID; that is, anti-inflammatory drug is a word with a broader meaning than NSAID:

Other hypernyms of NSAID include anti-inflammatory.

NSAID (noun)	anti-inflammatory drug (noun)
an anti-inflammatory drug that does not contain steroids	a medicine intended to reduce inflammation