A basilica is a large and impressive CHURCH building, typically with a NAVE and two aisles, an APSE, and a raised platform. It is often the seat of a bishop and has distinctive architectural features such as a dome, clerestory windows, and a central NAVE. The term 'basilica' is derived from the Greek word for 'royal house'. A CATHEDRAL is a large and important CHURCH, typically the seat of a bishop and the principal CHURCH of a diocese. It is usually distinguished by its grandeur and elaborate decoration. An APSE is a semicircular or polygonal recess in a CHURCH, typically at the east end, containing the altar. Pews are long benches in a CHURCH, typically arranged in rows facing the altar. A sacre is a religious ceremony or rite, especially one performed in a CHURCH. The NAVE is the main body of a CHURCH, extending from the entrance to the chancel. Apses are small chapels or recesses in a CHURCH, typically at the east end. A Pieta is a representation of the Virgin Mary holding the dead body of Jesus Christ.