family Mimidae vs bird family

family Mimidae and bird family both are nouns.

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

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

family 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

family 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