Catholic Church Liturgy And Ritual -- See Catholic Church Liturgy Here are entered works on the forms of prayers, rituals, acts and ceremonies used in the official public worship of the Catholic Church. Works discussing the liturgy of a particular ceremony, ritual, holiday, etc. are assigned an additional heading for the name of the ceremony, etc. Works on the liturgy of an individual monastic or religious order are entered under the name of the order with subdivision Liturgy, e.g. Jesuits--Liturgy.