Flagyl vs antiprotozoal

Flagyl and antiprotozoal both are nouns.

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

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

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

Other hypernyms of Flagyl include antiprotozoal drug.

Flagyl (noun)	antiprotozoal (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