Mechanical device and Supply chamber

Mechanical device noun - Mechanism consisting of a device that works on mechanical principles.

Supply chamber and mechanical device are semantically related. In some cases you can replace phrase "Supply chamber" with "Mechanical device", this phrases are similar.

Supply chamber noun - A mechanical device for holding something and supplying it as needed.

Mechanical device and supply chamber are semantically related. You can use "Mechanical device" instead a noun phrase "Supply chamber".