Technically that’s not the case. The term “Christians” appears in the bible in Acts 11:26. Christians were the first disciples and followers of Christ. There is no reference to the term “Catholic,” anywhere in the bible. The term Catholic shows up in a letter over 100 years after Christ ascended. None of the original disciples ever wrote the term “Catholic.” Jesus never mentions or references the Catholic Church.<quoted text>
Catholics are the original christians so logically all christian sects are a subset catholics.
So the term “Christians,” appears from the very beginning in Paul and Barnabas ministry in an area that is now Turkey & Syria.
King James Version (KJV)
26 And when he had found him, he brought him unto Antioch. And it came to pass, that a whole year they assembled themselves with the church, and taught much people. And the disciples were called Christians first in Antioch.
Antioch is about 15 miles inland from the Medeterranean sea, in what today is Turkey, just north of Syria. This city became home to the first Christian church outside of the land of Israel and was the first place in which followers of Jesus were referred to as Christians
The city was founded by Seleucus 1 in 300 BC, and its port, which was called Selecus, was founded at about the same time. Antioch had a population of Greeks from Athens and Macedonia, and also a sizeable Jewish population.
The Romans took it in as part of their empire, and next to Rome and Alexander, it became the third great city of the empire.
After Stephen's martyrdom in Jerusalem, some of the disciples scattered to Antioch and started preaching to the Greeks. When the Christians in Jerusalem heard that many people in Antioch were becoming believers in Christ, they sent Barnabas there, who in turn brought Paul, to help the new converts (Acts 11:19-26).
Paul and Barnabas stayed there for one year, and Paul began and ended his second missionary journey from there. When the prophet Agabus predicted a famine for Israel, the church in Antioch generously sent financial aid to Jerusalem to aid their brethern. Peter also visited Antioch (Galatians 2:11).