guile vs slyness

guile and slyness both are nouns.

Word	Noun	Adjective	Verb	Adverb
guile	Yes	No	No	No
slyness	Yes	No	No	No

As nouns, guile and slyness are synonyms defined as:

guile and slyness: shrewdness as demonstrated by being skilled in deception

Other synonyms of guile include craft, craftiness, cunning, foxiness, wiliness.

guile (noun)	slyness (noun)
the use of tricks to deceive someone (usually to extract money from them)	shrewdness as demonstrated by being skilled in deception
the quality of being crafty
shrewdness as demonstrated by being skilled in deception