christianity
Word family
Synonym discussion
Sense: noun/1
While Christianity names the religion as a whole system of beliefs, 'the Christian faith' places more emphasis on personal trust and devotion — a believer speaks of 'my Christian faith' but not 'my Christianity' in the same intimate way. 'Christendom' is a historical or sociological term for the collective body of Christian-majority societies, especially in medieval Europe, and is rarely used to describe personal belief. 'The Church' refers to the institutional organisation of Christians (a specific denomination or the global community) rather than the belief system itself. For example: 'She studied the history of Christianity' (the religion), 'She is a member of the Catholic Church' (the institution), and 'Medieval Christendom shaped European politics' (the Christian world).
Common collocations
Etymology
Christianity comes from Latin Christianitas, from Christianus 'a Christian', which in turn comes from Greek Christianos (Χριστιανός), meaning 'follower of Christ'. The root Christos (Χριστός) translates the Hebrew word Mashiach (Messiah), meaning 'anointed one'. The suffix -ity forms a noun denoting a state or quality. The English word has been used since the 14th century.