family Serranidae vs Percomorphi

family Serranidae and Percomorphi both are nouns.

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

family Serranidae (noun)	Percomorphi (noun)
marine fishes: sea basses, sea perches, groupers, jewfish	one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna