Catholic
This came from the Greek word Katholikos which means "throughout the whole" or "universal." This implies a world-wide faith, rather than a local one. The Nicene Creed, recited in the churches of many Christian denominations, speaks of "one holy catholic and apostolic church." Many faith groups refer to themselves as Catholic: the Roman Catholic Church, centered in the Vatican; Anglo-Catholics (within the Anglican Communion); and Evangelical Catholics (among Lutherans).

Catholic (literally meaning: according to (kata-) the whole (holos) or more generally "universal") is a religious term with a number of meanings: * The term can refer to the notion that all Christians are part of one Church, regardless of denominational divisions. (wikipedia)

This came from the Greek word Katholikos which means "throughout the whole" or "universal." This implies a world-wide faith, rather than a local one. The Nicene Creed, recited in the churches of many Christian denominations, speaks of "one holy catholic and apostolic church." Many faith groups refer to themselves as Catholic: the Roman Catholic Church, centered in the Vatican; Anglo-Catholics (within the Anglican Communion); and Evangelical Catholics (among Lutherans). (religious tolerance)

In the original versions of the ecumenical creeds, the word "catholic" is used to describe the entire church or the Christian faith. In this context, to call oneself "catholic" is to confess the fullness of the Christian faith without alteration. In order to avoid confusion, it is best to use the full name, Roman Catholic Church, when referring to that church body. (LCMS)