There are various words that can be used as synonyms for the term "wind instrument". A "woodwind" instrument is one that produces sound by blowing air through a mouthpiece made of wood, while a "brass" instrument produces sound by blowing air through a metal mouthpiece. There are also "aerophones", which include any instrument that produces sound by vibrating air molecules, as well as "blown" instruments, which are played by blowing air through a tube or pipe. Another alternative term for a wind instrument is "flute", although this refers specifically to instruments that utilize a cylindrical tube with finger holes. Ultimately, the term "wind instrument" encompasses a vast range of instruments used in various musical traditions around the world.