cruciferous plant vs Brassicaceae

cruciferous plant and Brassicaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
cruciferous plant	Yes	No	No	No
Brassicaceae	Yes	No	No	No

cruciferous plant (noun)	Brassicaceae (noun)
any of various plants of the family Cruciferae	a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives