Mimidae vs bird family

Mimidae and bird family both are nouns.

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

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

Mimidae: sometimes considered a subfamily of Troglodytidae: mockingbirds; catbirds; thrashers
bird family: a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

Mimidae (noun)	bird family (noun)
sometimes considered a subfamily of Troglodytidae: mockingbirds; catbirds; thrashers	a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings