Cairn and Slab

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

Slab and cairn are semantically related. in memorial topic. In some cases you can use "Slab" instead a noun "Cairn", when it comes to topics like monument.

Slab noun - Block consisting of a thick piece of something.

Cairn and slab are semantically related. Sometimes you can use "Cairn" instead a noun "Slab".