| A | B |
| Agrarian | Having to do with agriculture |
| Barter economy | To trade goods without using money. |
| Bubonic Plague | Devastating plague that hit Europe in 1300's |
| Chivalry | A knights’ code of honor in Middle Ages. |
| Clergy | The religious leaders of a faith. |
| Crusades | Wars fought to recover the holy lands. |
| Gothic | Architectural style found in Medieval Europe |
| Serf | Worked and farmed Medieval manors. |
| Tithe | Ten percent income tax levied by the Church. |
| Roman Catholic Church | Provided unity and stability in the Middle Ages. |
| Secular | Non-religious |
| Effects of the Crusades | Increased trade/desire for goods from Asia. Decline of feudalism. |