They were both formed in the time of the Apostles but split centuries later over doctrinal issues and political tensions. When the capitol of the Roman Empire was moved to the East, many felt that the same should be done with the capitol of the Church. They could also not agree on certain important doctrines.
the Eastern Orthodox Church and the Roman Catholic Church
I see a lot of domes on Orthodox churches but rarely see them on Catholic churches.
The Catholic Church in the West and the Orthodox Church in the East
The two churches were the Eastern Orthodox and the Roman Catholic
The term "catholic" is claimed by both the Roman Catholic Church and the Eastern Orthodox Church. The Roman Catholic Church includes all the Churches that accept the authority of the pope in Rome, including certain Eastern Churches. The Eastern Orthodox Church does not accept the authority of the pope in Rome. The pope is the spiritual leader of all Christians. However, the Protestants and Orthodox do not recognize that leadership.
No, Orthodox churches are where persons of Greek or Russian Orthodox faith worship. Like the Church of England, the Orthodox also separated from the Roman Catholic Church on matters of doctrine.
yes they are
The catholic church is sometimes considered the collection of churches that developed out of the Great Schism (namely, the Roman Catholic Church and the Eastern Orthodox Church). Although I have never heard someone use the term "catholic orthodox church," I would consider it to be referring to the Eastern Orthodox Christian religion.
A Roman Catholic will never receive communion in other churches.
There were two main churches: Roman Catholic and Orthodox. - UPDATE - Actually there were three main churches at the time, the Roman Catholic Church, Eastern Orthodox Church and Oriental Orthodox Church. The Oriental Orthodox Church was the first church to break away from the Orthodox Church (Eastern Orthodox Church) in 451AD followed by the Roman Catholic Church in 1054AD.
That would be "Roman Catholicism". It is a Christian religion that believes in the Holy Trinity of God, Jesus, and the Holy Spirit. There are other type of Catholic churches, like the Greek Orthodox or the Russian Orthodox.
The Roman Catholic Church, Anglicans, Lutherans, Orthodox Christians, Jains, Taoists, Hindus, and Buddhists are some of the churches that have nuns. They have chosen a cloistered lifestyle and are dedicated to their beliefs.