| A | B |
| Sale of Indulgences | The Catholic church practice of selling sin forgiveness. Pay the church and your sins are gone. Could there be an easier way to get to heaven? |
| Martin Luther | A Catholic priest who wrote a series of 95 theses (discussion points) and nailed them to a church door as an invitation for debate. His ideas sparked the Protestant movement. |
| Ninety-Five Theses | Martin Luther's famous work that started the church reform movement. |
| The printing press | “It is because of this technology that Martin Luther's ideas spread like wild fire. More than one million copies of his work were distributed throughout Europe.” |
| Protestants | Christians who are not Catholic. |
| Lutheranism | The Christian faith that is born from Luther's protestant beliefs. |
| Calvinism | These Christians believed in the idea of "predestination" that God had already chosen who was going to heaven. |
| The Counter Reformation | The Catholic Church takes a stand against losing so many of its followers to the Reformation movement by working to correct church abuses and correct Protestant issues with Catholic beliefs. |
| The Inquisition | “This was the Catholic Church's response to opposing religious beliefs attacking church doctrine. Many people are tortured |
| Heretic | “A person whose personal views are found to be openly different or against the accepted views |
| Humanism | “a method of thought that is concerned primarily with human beings and their values |
| Denomination | These are separate religious bodies that share the same larger faith. For example |
| Simony | This was the church practice of selling official church positions of leadership. |
| Johan Gutenberg | The inventor of the printing press. |
| Nepotism | Giving church jobs to family members regardless of ability. |
| Worldliness | Church leaders living rich lifestyles while asking their people to live simply. |