antiprotozoal vs antiprotozoal drug

antiprotozoal and antiprotozoal drug both are nouns.

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

As nouns, antiprotozoal and antiprotozoal drug are synonyms defined as:

antiprotozoal and antiprotozoal drug: a medicinal drug used to fight diseases (like malaria) that are caused by protozoa

antiprotozoal (noun)	antiprotozoal drug (noun)
a medicinal drug used to fight diseases (like malaria) that are caused by protozoa	a medicinal drug used to fight diseases (like malaria) that are caused by protozoa