Sand dune and Solitude

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. In some cases you can use "Solitude" instead a noun phrase "Sand dune".

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

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