Perciformes vs Percidae

Perciformes and Percidae both are nouns.

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

Perciformes (noun)	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