A prison, or jail (other commonly used terms are: penitentiary, correctional facility, remand centre, and detention centre; in some legal systems some of these terms have distinct meanings) is a facility in which individuals are forcibly confined and denied a variety of freedoms under the authority of the state as a form of punishment. The physical security is therefore confined with fencing, armed guard patrols, CCTV monitoring, riot-control gear, walls, earthworks, geographical features, or other barriers to prevent escape. Among the facilities are main entrance, hospitals, control area, safe cells, visiting area, death row, staff accommodation area, recreational area and administration area, including prison staff rooms. There is a youth rehabilitation centre at Bedok, called Bedok Prison. Competitive prisons do include Admiralty Road West, Bedok and Changi. Prisons should not have weapons.