family Cruciferae vs genus Pritzelago

family Cruciferae and genus Pritzelago both are nouns.

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

family Cruciferae (noun)	genus Pritzelago (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	chamois cress