genus Aethionema vs family Brassicaceae

genus Aethionema and family Brassicaceae both are nouns.

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

genus Aethionema (noun)	family Brassicaceae (noun)
Old World genus of the family Cruciferae	a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives