sauciness vs impertinence

sauciness and impertinence both are nouns.

Word	Noun	Adjective	Verb	Adverb
sauciness	Yes	No	No	No
impertinence	Yes	No	No	No

As nouns, sauciness and impertinence are synonyms defined as:

Other synonyms of sauciness include archness, perkiness, pertness.

sauciness (noun)	impertinence (noun)
inappropriate playfulness	inappropriate playfulness
	the trait of being rude and impertinent; inclined to take liberties
	an impudent statement