The instrument characterized by its strings and played with a bow is the violin. It is a string instrument with four strings, tuned in perfect fifths, and is played by drawing a bow across the strings, producing a rich, expressive sound. The violin is an integral part of classical music but is also used in various other genres like folk, jazz, and even rock. Its versatility allows it to be used in both solo performances and ensemble settings. The construction of a violin, including its body shape and materials, significantly affects its tone and projection, making it a beloved instrument among musicians.