colorful vs fluorescent

colorful is not a noun while fluorescent is a noun.

Word	Noun	Adjective	Verb	Adverb
colorful	No	Yes	No	No
fluorescent	Yes	Yes	No	No

colorful (noun)	fluorescent (noun)
	a lighting fixture that uses a fluorescent lamp

colorful (adjective)	fluorescent (adjective)
having much or varied color	brilliantly colored and apparently giving off light
having color or a certain color; sometimes used in combination	emitting light during exposure to radiation from an external source
striking in variety and interest