Electrician ?

Bonding when mentioned by electricians is generally the act of attaching all electrical grounds to a common single point ground to eliminate any difference of potential.

bonding? is not a term electricians use a lot.

wikipedia:

Electrical bonding is the practice of intentionally electrically connecting all exposed metal items not designed to carry electricity in a room or building as protection from electric shock. If a failure of electrical insulation occurs, all bonded metal objects in the room will have substantially the same electrical potential, so that an occupant of the room cannot touch two objects with significantly different potentials. Even if the connection to a distant earth is lost, the occupant will be protected from dangerous potential differences.