impudence vs insolence

impudence and insolence both are nouns.

Word	Noun	Adjective	Verb	Adverb
impudence	Yes	No	No	No
insolence	Yes	No	No	No

As nouns, impudence and insolence are synonyms defined as:

impudence and insolence: the trait of being rude and impertinent; inclined to take liberties

Other synonyms of impudence include cheekiness, crust, freshness, gall, impertinence.

impudence (noun)	insolence (noun)
the trait of being rude and impertinent; inclined to take liberties	an offensive disrespectful impudent act
an impudent statement	the trait of being rude and impertinent; inclined to take liberties