The most visible distinction is that Roman Catholics recognize the supremacy of the Pope in Rome, while the Eastern Orthodox Church doesn't. The Orthodox Church does not have one single leader: the Patriarchs of the several East European countries are all supreme leaders of 'their' Church. The Patriarch of Constantinople traditionally is seen as the 'first among equals' but that is more a courtesy title than an expression of real supremacy. All other distinctions concern often obscure points of theological doctrine, such as the fact that Roman Catholics consider Father, Son and Holy Ghost as a trinity, while the Eastern Orthodox Church sees them as a 'duality', linking the Holy Ghost to the Father only. Finally: when they cross themselves, Orthodox believers go from right to left, Roman Catholics from left to right.
Both use the Old and New testaments; however, the Eastern Orthodox Church uses additional scripture the Catholic Church does not.
schism.....
the Eastern Orthodox Church and the Roman Catholic Church
Eastern Orthodox
Anyone other than Eastern Orthodox eg Oriental Orthodox, Catholic, Protestant
The East–West Schism, commonly referred to as the Great Schism of 1054, is the break of communion between what are now the Eastern Orthodox and Catholic Churches, which began in the 11th century and continues.
The split between the Eastern Orthodox and the western Catholic Churches was caused by a number of different factors. Namely, neither side could decide on the Pope's role in the church, or the scope of his authority.
Roman Catholic, Eastern Orthodox, and Protestant.
Your question is too general. There are many things that were not a cause of tension between these belief systems. The colour of my dog for instance
Roman Catholic, Protestant, Eastern Orthodox
Eastern Orthodox Christianity, Christianity, and Catholic.
The Eastern Orthodox religions
There are Eastern or Byzantine Rite Catholics but they are in full union with Rome as opposed to the Eastern Orthodox Churches which are not. There was a brief period in the 20th century, when a separate Orthodox Church broke away from the Eastern Orthodox Church in America and formed the America Orthodox Catholic Church. But it was yet another splinter of an already splintered Church. orthodox (small "O") means right belief, and thus is synonymous with Catholic. Now, there is also an Orthodox Catholic Church of America, also not in Communion with the Catholic Church. . You may read about the American Orthodox Catholic Church at the links below.