APSE rounded east end of the nave
NAVE long, central hall that goes down the middle of the structure
AISLES border each side of the nave, and are usually separated
from the nave by a colonnade.
TRANSEPT cuts across between the apse and the nave, giving
the floor plan the shape of the cross
CHOIR the area where the nave and the transept intersect, where
the choir usually sits
NARTHEX the entrance area on the west