discourtesy vs cheek

discourtesy and cheek both are nouns.

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

As nouns, cheek is a hyponym of discourtesy; that is, cheek is a word with a more specific, narrower meaning than discourtesy:

discourtesy (noun)	cheek (noun)
a lack of politeness; a failure to show regard for others; wounding the feelings of others	impudent aggressiveness
a manner that is rude and insulting	either side of the face below the eyes
an expression of lack of respect	either of the two large fleshy masses of muscular tissue that form the human rump
	an impudent statement

discourtesy (verb)	cheek (verb)
	speak impudently to