colored vs colouring

colored and colouring both are nouns.

Word	Noun	Adjective	Verb	Adverb
colored	Yes	Yes	No	No
colouring	Yes	No	No	No

colored (noun)	colouring (noun)
a United States term for Blacks that is now considered offensive	the act or process of changing the color of something
	a visual attribute of things that results from the light they emit or transmit or reflect
	a digestible substance used to give color to food

colored (adjective)	colouring (adjective)
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