Haemulidae vs order Percomorphi

Haemulidae and order Percomorphi both are nouns.

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

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