Will the word POPE in the orthodox church is even not correct by itself, the Orthodox church have there PATRIACH and have PATRIACHATE which are
autocephalous from one another. They are devided two major groups or churches they are the Western and Eastern orthodox churches.
If we are going to trace the history of the Papacy and both the history of both catholic and orthodox chuches we could see that it is the POPE in rome who should be the head of the church, however during the grate schism in 1054 AD.these orthodox churces considered the POPE as first among equals by
First Council of Constantinople.