Religion is the same, but probably not the same teachings, making. There is an exchange of the same religious teachings. To make them aware of the different principle is good for the development of a particular religion.
Religious teachings are the same, but could not make it. The exchange of religious teachings in common. To know the main difference. It is good for the development of the religion itself.
As a religion, but the teachings may be different. There was an exchange of the teachings of religion. In order to know the main differences. Due to the development of religion.