The profession of faith in Christ by baptism; hence, the Christian religion, or the adoption of it.

The name received at baptism; or, more generally, any name or appelation.

That portion of the world in which Christianity prevails, or which is governed under Christian institutions, in distinction from heathen or Mohammedan lands.

The whole body of Christians.

All Christian countries and people.

the collective body of Christians throughout the world and history (found predominantly in Europe and the Americas and Australia); "for a thousand years the Roman Catholic Church was the principal church of Christendom"

the view of a community of Christian nations in Europe under the joint authority of the Pope and Emperor, dominant in medieval western Europe; the parts of the world in which Christianity is the most common religion

As used in this book, all organized religions outside the auspices of the Jehovah's Witness organization which claim allegiance to Jesus Christ.

Traditionally, the part of the world traditionally dominated by Christianity: most of Europe, Australasia and the Americas, plus parts of the Third World. This ignores the social importance of migrant communities from non-Christian societies of the Third World.

Christianity, or Christians collectively, or the regions where Christianity is the dominant faith ("the Christian world").

This derogatory term is used to refer to Protestant and Catholic groups, which are thought to have been established in the fourth century by the un-baptized Roman emperor, Constantine the Great.

Christendom, in the widest sense, refers to Christianity as a territorial phenomenon: those countries where most people are Christians, or nominal Christians, are part of Christendom.