Monasticism
Monasticism (from Greek μοναχός, monachos, derived from μόνος, monos, "alone") or monkhood is a religious way of life in which one renounces worldly pursuits to devote oneself fully to spiritual work. Monastic life plays an important role in many Christian churches, especially in the Catholic and Orthodox traditions. Similar forms of religious life also exist in other faiths, most notably in Buddhism, but also in Hinduism and Jainism, although the expressions differ considerably. By contrast, in other religions monasticism is criticized and not practiced, as in Islam and Zoroastrianism, or plays a marginal role, as in Judaism.
Males pursuing a monastic life are generally called monks while female monastics are called nuns. Many monks and nuns live in monasteries to stay away from the secular world. The way of addressing monastics differs between the Christian traditions. As a general rule, in Roman Catholicism, monks and nuns are called brother or sister, while in Eastern Orthodoxy, they are called father or mother.