pertness vs impertinence

pertness and impertinence both are nouns.

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

As nouns, pertness and impertinence are synonyms defined as:

Other synonyms of pertness include archness, perkiness, sauciness.

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