Stone and Wall rock

Stone noun - A shaped stone laid over or erected near a grave and usually bearing an inscription to identify and preserve the memory of the deceased.

Wall rock and stone are semantically related. In some cases you can replace phrase "Wall rock" with "Stone", this terms are similar.

Nearby Words: stony, stoned, stoning, stonily, stoneware

Wall rock noun - A rock immediately adjacent to a vein or fault.

Stone and wall rock are semantically related. You can use "Stone" instead a noun phrase "Wall rock".