watercress vs family Cruciferae

watercress and family Cruciferae both are nouns.

Word	Noun	Adjective	Verb	Adverb
watercress	Yes	Yes	No	No
family Cruciferae	Yes	No	No	No

watercress (noun)	family Cruciferae (noun)
cresses that grow in clear ponds and streams	a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives
any of several water-loving cresses

watercress (adjective)	family Cruciferae (adjective)
of a moderate yellow-green color that is greener and deeper than moss green and yellower and darker than pea green