The term "Roman Church" is often used to refer to the Roman Catholic Church, which is the largest Christian denomination in the world. However, this term can also include other Christian denominations that are based in Rome, such as the Eastern Orthodox Church and the Oriental Orthodox Church. Other synonyms for the Roman Church may include the Latin Church, the Western Church, or simply the Catholic Church. Additionally, some may use the term "Petrine Church" to refer to the Roman Church as it is based on the teachings of St. Peter, who is regarded as the first Bishop of Rome in Christian tradition.