A liturgy is the customary public worship done by a specific religious group, according to their particular traditions. The word may refer to an elaborate formal ritual such as the Eastern Orthodox Divine Liturgy or Catholic Mass, or a daily activity such as the Muslim salat (see Oxford Dictionary of World Religions, p.582–3). Not infrequently in Christianity, a distinction is made between "liturgical" and "non-liturgical" churches based on the elaboration and/or antiquity of the worship,… (More on Liturgy)