Picidae vs bird family

Picidae and bird family both are nouns.

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

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

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

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