rude vs bounderish

rude and bounderish both are adjectives.

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

As adjectives, rude and bounderish are synonyms defined as:

Other synonyms of rude include ill-bred, lowbred, underbred, yokelish.

rude (adjective)	bounderish (adjective)
lacking civility or good manners	(of persons) lacking in refinement or grace
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