Gempylidae vs order Percomorphi

Gempylidae and order Percomorphi both are nouns.

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

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