A woman belonging to a religious order, typically Roman Catholic or Eastern Orthodox. Nuns are also found in the Anglican/Episcopal, Lutheran and Buddhist traditions. In Catholicism, nuns are cloistered, meaning they live a life of secluded prayer, while sisters are more likely to be engaged in ministry outside the convent. However, the terms have become interchangeable in everyday language. Catholics commonly refer to nuns and brothers as “religious,” as in women and men religious, but that term is often confusing to general readers. Nuns and sisters are not ordained; they are lay people who take vows of poverty, chastity and obedience to the superior (leader) of their community. The superiors of some orders are referred to as Mother. Some nuns and sisters continue to use a surname, while others do not. On first reference, follow the appropriate conventions, as in Sister Jane Doe or Mother Teresa. On second reference, continue to use Sister or Mother and the first name if the person is known that way, such as Mother Teresa. Otherwise, use only the last name on second reference. See sister.