Painter and decorator.
And the two words go together. For example, a decorating company may have a sign on the side of their van saying, "FRED SMITH and SON, PAINTERS and DECORATORS."
If I only had time to say ONE word, it's a 50:50 split. "He's a painter." "They're decorators."
If you say, "he's a painter," context will usually tell you if you're talking decorating, or Picasso.