Cot and Lean-to

Cot noun - A small bed that folds up for storage or transport.

Lean-to and cot are semantically related. In some cases you can use "Lean-to" instead a noun "Cot".

Lean-to noun - Rough shelter whose roof has only one slope.

Cot and lean-to are semantically related. Sometimes you can use "Cot" instead a noun phrase "Lean-to".