when was the term catholic church first used
Catholic (term) The terms "catholic", "catholicism" and "catholicity" is closely related to the use of the term Catholic Church. The earliest evidence of the use of that term is the Letter to the Smyrnaeans that Ignatius of Antioch wrote in about 108 to Christians in Smyrna. Exhorting Christians to remain closely united with their bishop, he wrote: "Wherever the bishop shall appear, there let the multitude [of the people] also be; even as, wherever Jesus Christ is, there is the Catholic Church."[12][13]
Churches of Christ Though not officially recognized as distinct movements until 1906, the separation of the Churches of Christ and the Christian Churches had been taking place gradually for decades.