The term 'Part of Church' can refer to several different components. An APSE is a semicircular or polygonal recess in the wall of a church, usually at the east end, containing the ALTAR. A transept is a transverse part of a church building, typically forming the main body of the building and crossing the NAVE at right angles. The CHANCEL is the area around the ALTAR in a church, usually separated from the NAVE by steps or a screen. The NAVE is the central part of a church, extending from the entrance to the CHANCEL. Finally, an ALTAR is a raised platform or table used for religious ceremonies.