family Brassicaceae vs genus Malcolmia

family Brassicaceae and genus Malcolmia both are nouns.

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

family Brassicaceae (noun)	genus Malcolmia (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	genus of plants usually found in coastal habitats; Mediterranean to Afghanistan