Percomorphi vs family Lutjanidae

Percomorphi and family Lutjanidae both are nouns.

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

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