outlaw vs illegalise

outlaw is a noun but illegalise is not a noun.

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

As verbs, outlaw and illegalise are synonyms defined as:

Other synonyms of outlaw include criminalise, criminalize, illegalize.

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

outlaw (adjective)	illegalise (adjective)
contrary to or forbidden by law
disobedient to or defiant of law

outlaw (verb)	illegalise (verb)
declare illegal; outlaw	declare illegal; outlaw