The choirIn a church with a cruciform floor plan, the part of the church that lies on the side of the nave opposite to the transept. The main altar is in the choir., oriented towards the rising sun, is symbolic of Jesus’s Light.

The Our Lady’s chapel
A small church that is not a parish church. It may be part of a larger entity such as a hospital, school, or an alms-house, or it may stand alone.
An enclosed part of a church with its own altar.
, to the right of the cross formed by the floorplan of the church.