| A | B |
| Feudalism | An economic and political system in Europe during the Middle Ages based on land and service. |
| Guild | An organization of people who practiced the same craft. They set standards and prices. |
| Apprentice | A person who lived and worked without pay with a master craftsman, in order to learn a trade. |
| Cathedral | A large and elaborate Christian church. |
| Manor | A self-sufficient farming estate where nobles and serfs lived and worked. |
| Crusades | A series of holy wars during the Middle Ages. |
| Magna Carta | A legal document that limited the power of the king. |
| Vassal | Someone who received protection and land from a lord in exchange for military service. |
| Fief | A large piece of land given by a lord to a vassal in exchange for loyalty. |
| Serf | A person who was bound to live and work on the land of a noble. |
| Monk | A man who devotes his life to a religious group, often giving up all that he owns. |
| Monastery | A religious community in which monks lead lives of work and prayer. |