Motacillidae vs bird family

Motacillidae and bird family both are nouns.

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

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

Motacillidae: pipits and wagtails
bird family: a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

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