Chassis and Gantry

Chassis noun - The skeleton of a motor vehicle consisting of a steel frame supported on springs that holds the body and motor.

Gantry and chassis are semantically related. In some cases you can use "Gantry" instead a noun "Chassis".

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..

Chassis and gantry are semantically related. Sometimes you can use "Chassis" instead a noun "Gantry".