rude vs uncivil

rude and uncivil both are adjectives.

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

As adjectives, rude and uncivil are synonyms defined as:

rude (adjective)	uncivil (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