Relief mapping is highly comparable in both function and approach to another displacement texture mapping technique, Parallax occlusion mapping, considering that they both rely on ray tracing, though the two are not to be confused with each other, as parallax occlusion mapping uses reverse heightmap tracing.
Relief mapping shares similarities with another displacement texture mapping method called Parallax occlusion mapping, both relying on ray tracing for their functionality.  However, it's important to note that these two methods are not interchangeable, as parallax occlusion mapping utilizes reverse heightmap tracing.