family Brassicaceae vs genus Thysanocarpus

family Brassicaceae and genus Thysanocarpus both are nouns.

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

family Brassicaceae (noun)	genus Thysanocarpus (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	small genus of herbs of upland regions of the Pacific coast of North America