Badge A badge is a device, patch, or accoutrement which is given and/or can be displayed to indicate some feat of service. It can be for a special accomplishment, a symbol of authority granted by taking an oath (e.g., police and fire). It may also be a sign of legitimate employment or student status, or as a simple means of identification. They are also used in advertising and publicity.

Key Chain A Keychain is a small ring or chain of metal to which several keys, or fobs can be attached. The terms keyring & keychain are often used interchangeably to mean both the individual ring, or a combined unit of a ring and fob.