Percomorphi vs family Malacanthidae

Percomorphi and family Malacanthidae both are nouns.

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

Percomorphi (noun)	family Malacanthidae (noun)
one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna	short-headed marine fishes; often brightly colored