Cromlech and Cairn

Cromlech noun - A prehistoric megalithic tomb typically having two large upright stones and a capstone.

Cairn and cromlech are semantically related. In some cases you can use "Cairn" instead a noun "Cromlech".

Cairn noun - A mound of stones piled up as a memorial or to mark a boundary or path.

Cromlech and cairn are semantically related. You can use "Cromlech" instead a noun "Cairn".