Coryphaenidae vs fish family

Coryphaenidae and fish family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Coryphaenidae	Yes	No	No	No
fish family	Yes	No	No	No

As nouns, fish family is a hypernym of Coryphaenidae; that is, fish family is a word with a broader meaning than Coryphaenidae:

Coryphaenidae (noun)	fish family (noun)
large active pelagic percoid fish	any of various families of fish