Saz is a general term used for musical instruments in Turkish music culture. However, the term "saz" is also used to describe a specific instrument in the Turkish folk music tradition. This instrument typically has a large body and a long neck, and its strings are usually made of steel or brass. Bağlama, on the other hand, is a type of saz commonly used in Turkish folk music. Bağlama is characterized by a small body and a short neck, and its strings are typically made of nylon, silk, or steel. Therefore, the difference between bağlama and saz can be in elements such as size, body shape, neck length, strings, and materials used.