Boraginaceae vs plant family

Boraginaceae and plant family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Boraginaceae	Yes	No	No	No
plant family	Yes	No	No	No

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

Boraginaceae: a widely distributed family of plants distinguished by circinate flowers and nutlike fruit
plant family: a family of plants

Boraginaceae (noun)	plant family (noun)
a widely distributed family of plants distinguished by circinate flowers and nutlike fruit	a family of plants