| A | B |
| bishop | official of early Christian church |
| missionary | teacher of Christianity |
| common law | unwritten laws based on customs |
| feudalism | system of noble's loyalty to lord returned for land |
| manor | feudal estate with castle and land |
| tenant | farmer who pays rent for land |
| serf | peasant laborer lowest in feudal society |
| guild | medieval workers' organization |
| apprentice | young skilled workers of a trade |
| charter | written documents granting freedoms |
| Charlemagne | King of Franks |
| Holy Roman Empire | kingly and papal reign of western Europe empire |
| Eastern Orthodoxy | church of Eastern Europe |
| vassals | noble loyal to a lord |
| Middle Ages | between Classical and Modern Europe |
| dungeon | prison in the castle |
| Crusades | wars to free Jerusalem |
| armor | protective metal covering |
| page | 1st step to become knight |
| squire | 2nd step to become knight |