chromatic vs ocher

chromatic is not a noun while ocher is a noun.

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

chromatic (noun)	ocher (noun)
	a moderate yellow-orange to orange color
	any of various earths containing silica and alumina and ferric oxide; used as a pigment

chromatic (adjective)	ocher (adjective)
being or having or characterized by hue	of a moderate orange-yellow color
based on a scale consisting of 12 semitones
able to refract light without spectral color separation