Trichodontidae vs fish family

Trichodontidae and fish family both are nouns.

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

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

Trichodontidae: two species of elongate compressed scaleless large-eyed fishes that live in sand or mud
fish family: any of various families of fish

Trichodontidae (noun)	fish family (noun)
two species of elongate compressed scaleless large-eyed fishes that live in sand or mud	any of various families of fish