Catholicism is a word used to describe the beliefs of the Roman Catholic faith.
Roman Catholicism is a branch of Christianity, a religion that believes in one god and the teachings of Jesus Christ. Catholicism is one of the largest religions in the world. More than 1 billion people are Catholic, which is about one-sixth of the world’s population. The majority of Catholics are found in Western Europe and throughout the Americas.
On Sundays, Catholics are expected to attend a Mass, or church service, which is lead by a priest. Mass is also held on important religious days such as Easter and Christmas.