Help me understand towing weight

When there are separate references to GVWR and tongue weight, does the GVWR number include the tongue weight, or does one need to add the tongue weight to see the total weight of the trailer when considering how much towing capacity the TV must have.



I've got TV with 5000 without WD, or 6500 with WD. Given that I'd like to be 20% under capacity when loaded, understanding what is and what is not included can have an impact on the used trailers I'm looking at.



Thanks for the help.