Difference between Impolite and Ill-mannered

What is the difference between Impolite and Ill-mannered?

Impolite as an adjective is not polite; not of polished manners; wanting in good manners. while Ill-mannered as an adjective is of or pertaining to having bad manners; impolite.

We hope you now know whether to use Impolite or Ill-mannered in your sentence.