genus Hesperis vs family Brassicaceae

genus Hesperis and family Brassicaceae both are nouns.

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

genus Hesperis (noun)	family Brassicaceae (noun)
biennial or perennial erect herbs having nocturnally fragrant flowers	a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives