Kithara is a musical instrument that was popular in ancient Greece. It is a stringed instrument and was known for producing rich and melodious sounds. Although the term kithara is well-known, it has many synonyms that are commonly used in musical circles. One such synonym is Lyre, which was a smaller and more portable version of a kithara. Another synonym is Chelys, which was made from animal shells and was played in much the same way as a kithara. Additionally, Kinnor, Psaltery, and Harp are other words used to describe instruments that are similar to the kithara and produce similar sounds. With such a rich variety of synonyms, it is easy to see how the kithara and its related instruments played a significant role in the history and development of music.