slyness vs wiliness

slyness and wiliness both are nouns.

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

As nouns, slyness and wiliness are synonyms defined as:

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

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

slyness (noun)	wiliness (noun)
shrewdness as demonstrated by being skilled in deception	shrewdness as demonstrated by being skilled in deception