order Perciformes vs family Percidae

order Perciformes and family Percidae both are nouns.

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

order Perciformes (noun)	family Percidae (noun)
one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna	active freshwater fishes; true perches and pike perches