chromatic vs watercress

chromatic is not a noun while watercress is a noun.

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

chromatic (noun)	watercress (noun)
	cresses that grow in clear ponds and streams
	any of several water-loving cresses

chromatic (adjective)	watercress (adjective)
being or having or characterized by hue	of a moderate yellow-green color that is greener and deeper than moss green and yellower and darker than pea green
based on a scale consisting of 12 semitones
able to refract light without spectral color separation