What does it mean to be a Roman Apostolic Catholic?

Being a Roman Apostolic Catholic implies belonging to the Catholic Church which is defined by its communion with the Pope, the Bishop of Rome, considered the successor of the apostle Peter. This Church describes herself as one, holy, Catholic and apostolic. The term "Catholic" comes from the Greek Katholikos, which means "universal." This universality is manifested in its global presence and in its mission to proclaim the Gospel to all peoples. …