I believe the correct answer is relief.
Unlike freestanding sculpture, relief is the type of
sculpture which is created to be viewed from one side only. It is a sculptural
technique where the sculpted elements remain attached to a solid background of
the same material, whit difference in their attachment to the background
material. Types of reliefs are: high relief (more than 50% of the depth is
shown), mid-relief, low-relief, shallow-relief and sunk relief.
