Nuns are women who devote their lives to the service of their religion. They take vows that vary by faith and order, but often involve dedicating themselves to a life of poverty and chastity. Nuns are found in various religions, including Christianity, Buddhism, and Orthodox Christianity. In Christianity, nuns are found in the Roman Catholic, Oriental Orthodox, Eastern Orthodox, Lutheran, and Anglican traditions, as well as other Christian denominations. In the Catholic tradition, there are many religious institutes of nuns and sisters, each with its own charism or special character. Traditionally, nuns are members of enclosed religious orders and take solemn religious vows, while sisters do not live in the papal enclosure and formerly took vows called "simple vows". Nuns often undertake contemplative ministries, such as prayer for some particular good or supporting the missions of another order by.