family Brassicaceae vs genus Cardamine

family Brassicaceae and genus Cardamine both are nouns.

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

family Brassicaceae (noun)	genus Cardamine (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	bittercress, bitter cress