gross weight
combined weight of a vehicle or container and its contents
maximum ramp weight
maximum weight authorised for manoeuvring an aircraft
maximum landing weight
maximum weight of a craft at which landing is permitted
operating weight
weight of a vehicle or machine including operator, fuel, and operational equipment
zero-fuel weight
total weight of an aircraft and its contents, minus usable fuel
maximum takeoff weight
maximum weight of a craft at which takeoff is permitted