Anhingidae vs bird family

Anhingidae and bird family both are nouns.

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

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

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

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