Alcedinidae vs bird family

Alcedinidae and bird family both are nouns.

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

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

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

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