family Gempylidae vs Percomorphi

family Gempylidae and Percomorphi both are nouns.

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

family Gempylidae (noun)	Percomorphi (noun)
snake mackerels	one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna