family Acanthuridae vs order Perciformes

family Acanthuridae and order Perciformes both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Acanthuridae	Yes	No	No	No
order Perciformes	Yes	No	No	No

family Acanthuridae (noun)	order Perciformes (noun)
surgeonfishes	one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna