family Apogonidae vs Percomorphi

family Apogonidae and Percomorphi both are nouns.

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

family Apogonidae (noun)	Percomorphi (noun)
bright-colored marine fishes that incubate eggs in the mouth	one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna