Brassicaceae vs watercress

Brassicaceae and watercress both are nouns.

Word	Noun	Adjective	Verb	Adverb
Brassicaceae	Yes	No	No	No
watercress	Yes	Yes	No	No

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

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