What are the main differences between playing the violin and playing the piano?

The main differences between playing the violin and playing the piano are the instruments themselves and the techniques used to play them. The violin is a string instrument that is played by drawing a bow across the strings, while the piano is a keyboard instrument that is played by pressing keys. The violin requires precise finger placement and bowing technique, while the piano requires coordination between both hands to play different notes simultaneously. Additionally, the violin produces a more expressive and dynamic sound, while the piano offers a wider range of notes and can play multiple melodies at once.