colourful vs gay

colourful is not a noun while gay is a noun.

Word	Noun	Adjective	Verb	Adverb
colourful	No	Yes	No	No
gay	Yes	Yes	No	No

colourful (noun)	gay (noun)
	someone who is sexually attracted to persons of the same sex

colourful (adjective)	gay (adjective)
having much or varied color	bright and pleasant; promoting a feeling of cheer
striking in variety and interest	brightly colored and showy
having color or a certain color; sometimes used in combination	homosexual or arousing homosexual desires
	given to social pleasures often including dissipation
	offering fun and gaiety
	full of or showing high-spirited merriment