A chapel is a Christian place of prayer and worship that is usually relatively small.
it used for smaller spaces inside a church that have their own altar are often called chapels or a place of worship, sometimes non-denominational, that is part of a building or complex with some other main purpose.
for historical reasons, chapel is also often the term used by independent or nonconformist denominations for their places of worship in Great Britain, even where they are large and in practice they operate as a parish church.
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