colourful vs Canadian spelling

colourful is not a noun while Canadian spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
colourful	No	Yes	No	No
Canadian spelling	Yes	No	No	No

colourful (noun)	Canadian spelling (noun)
	English orthography used in Canada (characterized by 'analyze', 'centre', 'useable')

colourful (adjective)	Canadian spelling (adjective)
having much or varied color
striking in variety and interest
having color or a certain color; sometimes used in combination