Stephanomeria vs family Brassicaceae

Stephanomeria and family Brassicaceae both are nouns.

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

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