genus Stephanomeria vs family Brassicaceae

genus Stephanomeria and family Brassicaceae both are nouns.

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

genus Stephanomeria (noun)	family Brassicaceae (noun)
malheur wire lettuce	a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives