guileful vs cunning

guileful is not a noun while cunning is a noun.

Word	Noun	Adjective	Verb	Adverb
guileful	No	Yes	No	No
cunning	Yes	Yes	No	No

As adjectives, guileful and cunning are synonyms defined as:

Other synonyms of guileful include crafty, dodgy, foxy, knavish, slick, sly, tricksy, tricky, wily.

guileful (noun)	cunning (noun)
	crafty artfulness (especially in deception)
	shrewdness as demonstrated by being skilled in deception

guileful (adjective)	cunning (adjective)
marked by skill in deception	showing inventiveness and skill
	marked by skill in deception
	attractive especially by means of smallness or prettiness or quaintness