There is only one religion, though there are a hundred versions of it.
George Bernard Shaw, Plays Pleasant and Unpleasant, Vol. II, preface (1898)
The word ‘Catholic’ commonly refers to the members, beliefs, and practices of the Roman Catholic Church, including all sui juris particular Churches that are in full communion with the Holy See, namely the Latin Rite and twenty-two Eastern Catholic Churches. The highest rates, after the Holy See, are in Europe and South America. (Information source: Wikipedia)