illicit vs outlaw

illicit is not a noun while outlaw is a noun.

Word	Noun	Adjective	Verb	Adverb
illicit	No	Yes	No	No
outlaw	Yes	Yes	Yes	No

As adjectives, illicit and outlaw are synonyms defined as:

Other synonyms of illicit include illegitimate, outlawed, unlawful.

illicit (noun)	outlaw (noun)
	someone who has committed a crime or has been legally convicted of a crime

illicit (adjective)	outlaw (adjective)
contrary to accepted morality (especially sexual morality) or convention	contrary to or forbidden by law
contrary to or forbidden by law	disobedient to or defiant of law

illicit (verb)	outlaw (verb)
	declare illegal; outlaw