The Latin Church is an autonomous or sui iuris particular church in communion with the Catholic Church. There are several such sui iuris particular churches within the Catholic Church. Other examples are the Maronite Church, the Ukrainian Greek Catholic Church, and the Syro-Malabar Catholic Church. They differ from each other in liturgy (ceremonies, vestments, chants, language), devotional traditions, theology, canon law, and pastors (even if in the same territory as another), but they all hold the same faith, and all see union with the bishop of Rome, the pope, as essential to being a Catholic.