family Cruciferae vs genus Physaria

family Cruciferae and genus Physaria both are nouns.

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

family Cruciferae (noun)	genus Physaria (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	small genus of western North American herbs similar to Lesquerella: bladderpods