| A | B |
| SCHISM | split between Catholics and Orthodox Christians in 1054 |
| CALVIN | argued for predestination, inluenced Presbyterians and Reformed Churches |
| LUTHER | German Protestant; argued that we cannot save ourselves through good works |
| IGNATIUS LOYOLA | founder of Society of Jesus (the Jesuit) order of Catholic priests |
| BAPTISM | Christian ritual of purification and initiation |
| AQUINAS | 13c theologian based upon Aristotle |
| ORTHODOX | form of Christianity in Eastern Europe |
| PURGATORY | Catholic doctrine of station of afterlife prior to heaven |
| PROTESTANT | reformers who split with the Catholic church in the 16c: Luther, Calvin |
| MONASTERIES | where mysticism flourished |
| ENLIGHTENMENT | 18c European period characterized by the rise of science, humanism and secularism |
| INQUISITION | Catholic Church's practice of investigation of heretics |
| PURGATORY | Catholic doctrine about afterlife |
| REFORMATION | the Protestant movement of northern Europe |
| INDULGENCES | Medieval Catholic practice of soliciting contributions |
| CRUSADES | Medieval military compaigns into Palestine |