I’m an Electrical Engineer. When I first saw the abbreviation GND yesterday in reference to the Green New
Deal Derp, my immediate thought was of ground. In EE-speak, a ground (often abbreviated GND) is a structure that can serve as a source and sink of electric current. As such, it is the place that is the reference point for measuring electrical potential (what’s commonly called voltage), so it’s the place of zero potential.
GND has zero potential.