A piano score is a written version of a musical piece that is intended to be played on a piano. There are several synonyms for the term "piano score" that can be used interchangeably. One of the most common synonyms is "sheet music," which refers to any written music that can be read and played by a musician. Another synonym is "piano sheet music," which specifically refers to sheet music that is composed for a piano. "Piano arrangement" is another synonym that is often used to describe a version of a musical piece that has been adapted for piano. Finally, "piano notation" describes the system of musical symbols and notation used to notate music intended to be played on a piano.