Nothing, that's why there's tension.
They are catholics and protestants.
Primarily Catholics and Protestants
Christian is typically a reference to Catholics, and Protestants.
Generally Catholics are regarded as being in the Republic of Ireland and Protestants in Northern Ireland, but there are Catholics and Protestants in all parts. Protestants are the majority in Northern Ireland and Catholics are the majority in the Republic of Ireland.
Protestants do not accept the Roman Catholic Church as the final arbiter of the Christian Faith.
Christianity is a religion. There are different denominations though, and Protestants and Catholics.
Yes, primarily in Europe on the 4th Sunday of Lent for Catholics and Protestants.
All Catholics are Christians. There were no Protestants until the 15'Th Century.
More than 90 % of the population are Christian orthodox; also catholics, protestants and many sectarians.
Orthodox Christians use the same Bible as Catholics, Protestants, and most other Christian denominations.
Catholics ARE Christians. Christianity basically splits to: Catholics and non Catholics, the non-Catholics are Protestants, Baptist, Non Demoninational ect. Yet we are all connected because we are all Christians.
there are catholics as well as protestants but also many non-christian forms of belief