family Malacanthidae vs Percomorphi

family Malacanthidae and Percomorphi both are nouns.

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

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