The bell is composed of a body (usually either rectangular or globular) and a clapped, suspended within the body. As the bell is moved, the clapper strikes the body, making sound. Bells are generally metal, either beaten into shape around a mould or cast in a bell-foundry.
Most Christian churches have bells, both to call the faithful to prayer, and to toll out events, such as a national triumph or the death of a notable local. Bells are used in music, and can also be sewn to people's clothes, to chime as they move. Bells were (and are) frequently attached to animals' necks, in order that they can be found (or, in the case of a predatory cat, to warn potential prey of its appraoch).