| A | B |
| Four Marks | One, holy, catholic, apostolic |
| unity | united as one although diverse |
| uniformity | all are the same |
| Signs of unity | charity, profession of faith, worship and sacrament, apostolic succession |
| Holy Trinity | An the example for the source of Christian unity |
| schisms and heresies | wounds to christian unity |
| Nicene Creed | summarizes the key points of the faith |
| heresy | when a person consciously rejects a dogma of the church |
| ecumenism | a movement seeking to restore unity among Christians |
| grace | a free and undeserved gift of God's loving and active presence |
| episcopal | means "of or relating to bishops". |
| orally | The method by which the Apostles first handed on the faith to the earliest Christians. |
| magisterium | the group of church leaders who authentically interpret the Word of God and apply it to new questions. |
| Apostolic Succession | Passing on the faith from the apostles to the ordained bishops |
| Sacred Tradition | The handing on of the truths of Jesus |
| Protestant Reformation | A movement that brought up the theological principles of grace or scripture alone as a means of salvation. |