polychrome vs coloured

polychrome and coloured both are nouns.

Word	Noun	Adjective	Verb	Adverb
polychrome	Yes	Yes	Yes	No
coloured	Yes	Yes	No	No

polychrome (noun)	coloured (noun)
a piece of work composed of or decorated in many colors	a United States term for Blacks that is now considered offensive

polychrome (adjective)	coloured (adjective)
having or exhibiting many colors	having color or a certain color; sometimes used in combination
	(used of color) artificially produced; not natural
	having skin rich in melanin pigments;
	favoring one person or side over another

polychrome (verb)	coloured (verb)
color with many colors; make polychrome