There are several 'orthodox' churches. Each may have a different yiew
There is an Orthodox Church and a Catholic Church. There is no Catholic Orthodox Church.
Eastern Orthodox Church (or the Christian Orthodox Church).
No, the Greek Orthodox church is a part of the Eastern Orthodox Churches.
Anglican Orthodox Church was created in 2001.
The Orthodox Church of Greece (Eastern Orthodox Church).
Its a faith (church). Bulgarians follow Orthodox church
The Coptic Orthodox Church
The Romanian Orthodox Church mainly follows the liturgical practice of the Greek Orthodox Church, rather than the Russian Orthodox Church, such as the use of the new calendar.
In Eritrea, there are two main Orthodox Christian churches: the Eritrean Orthodox Tewahedo Church and the Ethiopian Orthodox Tewahedo Church. The Eritrean Orthodox Tewahedo Church is the country's predominant church, having gained independence from the Ethiopian Orthodox Church in 1993. The religious landscape in Eritrea is diverse, but the majority of Orthodox Christians belong to the Eritrean Orthodox Tewahedo Church.
Abkhazian Orthodox Church was created in 2009.
Celtic Orthodox Church was created in 1866.
Romanian Orthodox Church's population is 18,806,428.