These terms are linked to the Glossary Pages in http://www.pitt.edu/~medart.
Plans and types of plan
plan (also called
ground plan or floor plan)
Some functions of the central plan
baptistry
(also look out for the central plan used for tombs, palace chapels, castles)
Parts of Plans, particularly longitudinal plans
Note the use of the points of the compass (east, west, north, south)
to refer to the sides of longitudinal church buildings. This is done
because generally the altar is placed at the east end, pointing to Jerusalem.
The entrance is normally at the west end, leading directly to the altar.
In relation to this west-east axis, the left side is the north side and
the right side is the south side.
chapel: a small space in a church, or an entire small church, containing an altar; usually apsidal in shape, or containing an apse