family Serranidae vs order Percomorphi

family Serranidae and order Percomorphi both are nouns.

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

family Serranidae (noun)	order 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