uncivil vs rude

uncivil and rude both are adjectives.

Word	Noun	Adjective	Verb	Adverb
uncivil	No	Yes	No	No
rude	No	Yes	No	No

As adjectives, uncivil and rude are synonyms defined as:

uncivil (adjective)	rude (adjective)
lacking civility or good manners	lacking civility or good manners
	belonging to an early stage of technical development; characterized by simplicity and (often) crudeness
	socially incorrect in behavior
	(used especially of commodities) being unprocessed or manufactured using only simple or minimal processes
	(of persons) lacking in refinement or grace