crust vs impertinence

crust and impertinence both are nouns.

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

As nouns, crust and impertinence are synonyms defined as:

crust and impertinence: the trait of being rude and impertinent; inclined to take liberties

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

crust (noun)	impertinence (noun)
the trait of being rude and impertinent; inclined to take liberties	inappropriate playfulness
the outer layer of the Earth	the trait of being rude and impertinent; inclined to take liberties
a hard outer layer that covers something	an impudent statement

crust (verb)	impertinence (verb)
form a crust or form into a crust