Capitonidae vs bird family

Capitonidae and bird family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Capitonidae	Yes	No	No	No
bird family	Yes	No	No	No

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

Capitonidae: barbets
bird family: a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

Capitonidae (noun)	bird family (noun)
barbets	a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings