Sciuridae vs mammal family

Sciuridae and mammal family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sciuridae	Yes	No	No	No
mammal family	Yes	No	No	No

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

Sciuridae: a mammal family of true squirrels including: ground squirrels, marmots, chipmunks, flying squirrels, spermophiles
mammal family: a family of mammals

Sciuridae (noun)	mammal family (noun)
a mammal family of true squirrels including: ground squirrels, marmots, chipmunks, flying squirrels, spermophiles	a family of mammals