Gantry and Platform

Gantry noun - A framework of steel bars raised on side supports to bridge over or around something; can display railway signals above several tracks or can support a traveling crane etc..

Platform and gantry are semantically related. in base topic. In some cases you can use "Platform" instead a noun "Gantry".

Platform noun - A level usually raised surface.

Gantry and platform are semantically related. You can use "Gantry" instead a noun "Platform".