Other forms: pianists
If you play the piano, you are a pianist. The word most often describes a professional piano player, like a pianist in the symphony.
A pianist might work playing jazz standards in a restaurant or performing solo shows on stages all over the world. A local pianist might make some extra money by giving piano lessons to kids, tuning pianos, or serving as a substitute music teacher. The French source of the word pianist is pianiste, which comes from the Italian piano e forte, "soft and loud."