The beginning of Islam is around the six hundred Christian eras, and Prophet Muhammad in Mecca founded it. Historians hypothesize that Prophet Muhammad had revelations from angel Jibril. After which he recorded the revelations into the holy book, The Quran.
People from the Islam religion follow the teachings of the Prophet and embrace Allah as their God. Catholicism, on the other hand, is the most popular religion next to Christianity. It is an extension of Judaism, along with Jesus Christ. They also have a strong belief in the church and the Pope as the one who exemplifies perfect Catholicism and grace.
Catholics possess a very stern devotion to the church. They believe that Jesus Christ and Prophet Muhammad are messengers from God. Of course, in this particular religion, Jesus Christ is our savior.