Roman Catholic and Orthodox churches: General Terms and Concepts
- abbey
- anointing of the sick
- antipope
- Apostolic Constitutions
- asperges
- Athanasian Creed
- beatification
- bull
- canon
- canon law
- canonization
- cherub
- Confraternity of Christian Doctrine
- Constantine, Donation of
- Constitutions, Apostolic
- Counter Reformation
- crucifix
- decretals
- devil's advocate
- Doctors of the Church
- Donation of Constantine
- encyclical
- extreme unction
- False Decretals
- Fathers of the Church
- glossolalia
- Golden Legend, The
- holy water
- Host
- Index
- indulgence
- infallibility
- Inquisition
- interdict
- Knights of Columbus
- liberation theology
- limbo
- Mariology
- Mass
- missal
- novena
- nuncio, apostolic
- pallium
- papacy
- papal election
- penance
- Peter's pence
- pope
- purgatory
- Reformation, Catholic
- relics
- rosary
- sacramental
- Schism of East and West
- Schism of the West
- Schism, Great
- simony
- stigmata
- succession, apostolic
- transubstantiation
- veronica
- viaticum
- vigil
- Visitation of Our Lady
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