Which room in a church is used by the clergy to change into their ceremonial clothes for church services?

In England and Wales, a vestry is a room or building attached to a church, in which ceremonial clothing and objects are kept. It is usually here where the clergy change into their ceremonial clothes for church. It is also known as a sacristry.

Outside of England and Wales, for example in the Scottish and American Episcopal Churches, the vestry also refers to the elected governing body and legal representative of a parish church.

A pulpit is the area from which a member of the clergy delivers a sermon. The chancel is the part of the church where the clergy and choir sit during a religious ceremony. A transept is the structure that gives a church its cross-like shape.