family Lutjanidae vs Percomorphi

family Lutjanidae and Percomorphi both are nouns.

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

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