family Brassicaceae vs genus Cakile

family Brassicaceae and genus Cakile both are nouns.

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

family Brassicaceae (noun)	genus Cakile (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	small genus of succulent annual herbs found on sandy shores of North America and Europe