- Acts of the Apostles: account of the early church written by Luke
- Antioch: a city with both Gentiles and Jews
- Ascension: Jesus return to Heaven
- Assumption: When Mary asended to heaven
- bishop: the leader of a diocese
- catechumens: those preparing for baptism
- denominations: christian based religions
- diocese: a group of many parishes (ie= the diocese of Providence)
- ecumenism: christians and protestants working together to build respect and understanding
- Gentiles: non-Jews
- laity: single, married people, or widowed in the Church
- liturgical assembly: a group of Christians gathered for liturgy
- Mother of the Church: Mary
- parish: congregation
- Pentecost: the Holy Spirit filled the Apostles with the power to spread God's word across the world
- pope: leader of the Catholic Church
- Protestant Reformation: a reform of the Catholic Church
- religious: people who take vows to be dedicated to the Church
- what is an early name for Christianity?: Way
- When did the Pentecost occur?: 10 days after the Ascension
- When does the Church celebrate its birthday?: Pentecost Sunday