antiprotozoal vs Flagyl

antiprotozoal and Flagyl both are nouns.

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

As nouns, Flagyl is a hyponym of antiprotozoal; that is, Flagyl is a word with a more specific, narrower meaning than antiprotozoal:

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

Other hyponyms of antiprotozoal include antimalarial, antimalarial drug, metronidazole.

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