The term "Apostolic See" is often used as a synonym for the Vatican, but there are several other words and phrases referring to the seat of the Pope. One of the most common is the "Holy See," which is the sovereign entity of the Pope and the central governing body of the Catholic Church. Another is the "Roman Curia," which is the administrative body that assists the Pope in his duties. "Papal See" is another phrase used to describe the position of the Pope, and "Episcopal See" refers to the bishop's seat and authority. Finally, "Petrine See" refers specifically to the authority of the Pope as the successor of Saint Peter, the founder of the Catholic Church.