multi-color vs colourful

multi-color and colourful both are adjectives.

Word	Noun	Adjective	Verb	Adverb
multi-color	No	Yes	No	No
colourful	No	Yes	No	No

multi-color (adjective)	colourful (adjective)
having sections or patches colored differently and usually brightly	having much or varied color
	striking in variety and interest
	having color or a certain color; sometimes used in combination