Which items might the Roman Catholics and the Greek Orthodox Church disagree on

The Catholic Church believes the pope to be infallible in matters of doctrine. Orthodox believers reject the infallibility of the pope and consider their own patriarchs, too, as human and thus subject to error. In this way, they are similar to Protestants, who also reject any notion of papal primacy.Oct 21, 20

Explanation:

So they would disagree on the nature of the pope

Another Answer is Futile

answer; i believe its (jade); good luck