A glockenspiel (German pronunciation: [ˈɡlɔkənˌʃpiːl] or [ˈɡlɔkŋ̍ˌʃpiːl], Glocken: bells and Spiel: set) is a percussion instrument composed of a set of tuned keys arranged in the fashion of the keyboard of a piano. In this way, it is similar to the xylophone; however, the xylophone’s bars are made of wood, while the glockenspiel’s are metal plates or tubes, thus making it a metallophone. The glockenspiel, moreover, is usually smaller and higher in pitch.
In German, a carillon is also called a Glockenspiel, while in French, the glockenspiel is often called a carillon. In music scores the glockenspiel is sometimes designated by the Italian term campanelli.

Source: Glockenspiel – Wikipedia