Gross Vehicle Weight (GVW) is the actual weight of the fully loaded vehicle or trailer, including all cargo, fluids, passengers, and optional equipment, as measured by a scale. If you are in a motor home and not towing anything, the GVW is the total weight of the RV and everything in it.
GAWR: Gross Axle Weight Rating
Gross Axle Weight Rating (GAWR) is the maximum number that the GAW of a single axle should never exceed. You may see the more specific RGAWR, when referring to the rear axle, or FGAWR, when referring to the front axle
GCWR: Gross Combination Weight Rating
Gross Combination Weight Rating (GCWR) is the maximum number that the tow vehicle GVW plus towed vehicle GVW (or GTW) should never exceed.
GVWR: Gross Vehicle Weight Rating
Gross Vehicle Weight Rating (GVWR) is the maximum number that the GVW or GTW should never exceed. GVWR is applied to trailers as well as vehicles, but you may see this rating referred to as the Maximum Loaded Trailer Weight.