Solitude and Sand dune

Solitude noun - The state of being alone or kept apart from others.

Sand dune and solitude are semantically related In some cases you can replace phrase "Sand dune" with "Solitude", this terms are similar.

Sand dune noun - A ridge of sand created by the wind; found in deserts or near lakes and oceans.

Solitude and sand dune are semantically related in wasteland topic. You can use "Solitude" instead a noun phrase "Sand dune".