contempt vs rudeness

contempt and rudeness both are nouns.

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

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

Other hypernyms of contempt include discourtesy.

contempt (noun)	rudeness (noun)
a willful disobedience to or disrespect for the authority of a court or legislative body	a manner that is rude and insulting
a manner that is generally disrespectful and contemptuous	a wild or unrefined state
open disrespect for a person or thing
lack of respect accompanied by a feeling of intense dislike