Modern jazz is a music genre that originated in the early 20th century in the United States and is associated with improvisation and experimentation. In recent years, there has been an increase in the popularity of modern jazz, and as a result, there are many synonyms for the term "modern jazz." Some of the synonyms for modern jazz include avant-garde jazz, contemporary jazz, experimental jazz, and free jazz. All of these terms are used to describe a style of jazz that is rooted in tradition, but also embraces innovation and creativity. Whether you prefer the classic sound of traditional jazz or the cutting-edge experimentation of modern jazz, there is something for everyone in this vibrant and ever-evolving music genre.