family Cruciferae vs genus Thysanocarpus

family Cruciferae and genus Thysanocarpus both are nouns.

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

family Cruciferae (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