cheekiness vs discourtesy

cheekiness and discourtesy both are nouns.

Word	Noun	Adjective	Verb	Adverb
cheekiness	Yes	No	No	No
discourtesy	Yes	No	No	No

As nouns, discourtesy is a hypernym of cheekiness; that is, discourtesy is a word with a broader meaning than cheekiness:

cheekiness: the trait of being rude and impertinent; inclined to take liberties
discourtesy: a manner that is rude and insulting

Other hypernyms of cheekiness include rudeness.

cheekiness (noun)	discourtesy (noun)
the trait of being rude and impertinent; inclined to take liberties	a lack of politeness; a failure to show regard for others; wounding the feelings of others
	a manner that is rude and insulting
	an expression of lack of respect