family Brassicaceae vs genus Subularia

family Brassicaceae and genus Subularia both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Brassicaceae	Yes	No	No	No
genus Subularia	Yes	No	No	No

family Brassicaceae (noun)	genus Subularia (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	small genus of herbs of north temperate regions and mountains of tropical Africa