crust vs insolence

crust and insolence both are nouns.

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

As nouns, crust and insolence are synonyms defined as:

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

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

crust (noun)	insolence (noun)
the trait of being rude and impertinent; inclined to take liberties	an offensive disrespectful impudent act
the outer layer of the Earth	the trait of being rude and impertinent; inclined to take liberties
a hard outer layer that covers something

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