family Brassicaceae vs genus Alliaria

family Brassicaceae and genus Alliaria both are nouns.

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

family Brassicaceae (noun)	genus Alliaria (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	a genus of herbs of the family Cruciferae; have broad leaves and white flowers and long siliques