Beach chair and Folding chair

Beach chair noun - A folding chair for use outdoors; a wooden frame supports a length of canvas.

Folding chair and beach chair are semantically related In some cases you can use "Folding chair" instead a noun phrase "Beach chair".

Folding chair noun - A chair that can be folded flat for storage.

Beach chair and folding chair are semantically related in chair folded for storage topic. You can use "Beach chair" instead a noun phrase "Folding chair".