An example of a piece that would be described as being played "piano" is a musical piece that is played very quietly.
An example of a piano is a large instrument that you play by pressing black and white keys that cause hammers to hit wires to produce sound.
The piano in his house takes up a lot of space.
She has been taking lessons for many years and now plays piano very well.
He can play "Happy Birthday" on the piano.
Most of the works by Frédéric Chopin are for the piano.