contempt vs discourtesy

contempt and discourtesy both are nouns.

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

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

Other hypernyms of contempt include rudeness.

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

Other hypernyms of contempt include disrespect.

contempt (noun)	discourtesy (noun)
a willful disobedience to or disrespect for the authority of a court or legislative body	a lack of politeness; a failure to show regard for others; wounding the feelings of others
a manner that is generally disrespectful and contemptuous	a manner that is rude and insulting
open disrespect for a person or thing	an expression of lack of respect
lack of respect accompanied by a feeling of intense dislike