family Brassicaceae vs genus Isatis

family Brassicaceae and genus Isatis both are nouns.

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

family Brassicaceae (noun)	genus Isatis (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	Old World genus of annual to perennial herbs: woad