Apse and Cleft

Apse noun - A domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar.

Cleft and apse are semantically related. In some cases you can use "Cleft" instead a noun "Apse".

Cleft noun - An irregular usually narrow break in a surface created by pressure.

Apse and cleft are semantically related. Sometimes you can use "Apse" instead a noun "Cleft".