Flagyl vs antiprotozoal drug

Flagyl and antiprotozoal drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
Flagyl	Yes	No	No	No
antiprotozoal drug	Yes	No	No	No

As nouns, antiprotozoal drug is a hypernym of Flagyl; that is, antiprotozoal drug is a word with a broader meaning than Flagyl:

Flagyl: antiprotozoal medication (trade name Flagyl) used to treat trichomoniasis and giardiasis
antiprotozoal drug: a medicinal drug used to fight diseases (like malaria) that are caused by protozoa

Other hypernyms of Flagyl include antiprotozoal.

Flagyl (noun)	antiprotozoal drug (noun)
antiprotozoal medication (trade name Flagyl) used to treat trichomoniasis and giardiasis	a medicinal drug used to fight diseases (like malaria) that are caused by protozoa