| A | B |
| indulgence | Release from punishments due for sin |
| Reformation | 16th-century movement for religious reform, leading to the founding of new Christian churches |
| Lutheran | Member of a Protestant church founded on the teachings of Martin Luther |
| Protestant | Member of a Christian church founded on the principles of the Reformation |
| Peace of Augsburg | Agreement in 1555 declaring that the religion of each German state would be decided by its ruler |
| annul | Cancel or put an end to |
| Anglican | Relating to the Church of England |
| predestination | Doctrine that God has decided all things beforehand, including which people will be saved |
| Calvinism | Religious teachings based on the ideas of the reformer John Calvin |
| theocracy | Government controlled by religious leaders |
| Presbyterian | Member of the Protestant church governed by elders and founded by John Knox |
| Anabaptist | Member of a Protestant group during the Reformation who believed only adults should be baptized. Also believed that church and state should be separate |
| Catholic Reformation | 16th-century Catholic reform movement in response to Protestant Reformation |
| Jesuits | Member of the society of Jesus, a Roman Catholic religious order founded by Ignatius of Loyola |
| Council of Trent | Meeting of Roman Catholic leaders to rule on doctrines criticized by the Protestant reformers |