<human>:  What is the difference between a violin and a cello?
<bot>: The primary difference between a violin and a cello is the size, as the violin is much smaller than the cello. The violin is held under the chin and is tuned to the notes G-D-A-E, while the cello is held between the knees and is tuned to the notes C-G-D-A. In addition, the violin has four strings and the cello has four or five strings, and the different strings produce a different sound. Violins are typically used in classical and folk music, while cellos are used in a variety of musical genres, including classical, jazz, and pop.