| A | B |
| clergy | priests |
| serf | peasant who didn't have the right to marry, leave the manor, or own property |
| guild | a group of craftsmen |
| feif | land granted to a vassal by a lord |
| heresy | religious beliefs that conflict with the church |
| feudalism | system under which landowning nobles governed and protected people for their services |
| excommunicate | to exclude someone from church membership |
| scholasticism | a new way of thinking that used reason to exlore questions of faith |
| anti-semitism | hatred of Jewish people |
| fjord | valley that is an inlet to the sea |
| missionary | person sent out to teach his or her religion |
| plague | disease that spreads quickly and kills many people |
| theology | study of religion and God |
| Mass | Catholic worship service |
| concordat | agreement between Pope and ruler of country |
| vernacular | local language of a people |