Percomorphi vs family Percidae

Percomorphi and family Percidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Percomorphi	Yes	No	No	No
family Percidae	Yes	No	No	No

Percomorphi (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