criminalize vs illegalize

criminalize and illegalize both are verbs.

Word	Noun	Adjective	Verb	Adverb
criminalize	No	No	Yes	No
illegalize	No	No	Yes	No

As verbs, criminalize and illegalize are synonyms defined as:

Other synonyms of criminalize include criminalise, illegalise, outlaw.

criminalize (verb)	illegalize (verb)
declare illegal; outlaw	declare illegal; outlaw
treat as a criminal