Professional Answer: While the terms "earthing" and "grounding" are often used interchangeably, particularly in different regions (earthing in the UK and most of the world, grounding in the US and Canada), they refer to the same fundamental principle of connecting an electrical system to the Earth. However, some technical distinctions can be made: Earthing generally refers to connecting the non-current-carrying parts of an installation (like a motor casing) to the earth for safety. Grounding can refer more broadly to connecting a current-carrying part of a system, such as a transformer's neutral point, to the ground for system stability. In practice, both terms describe the critical safety measure of providing a path for unwanted electrical currents to dissipate safely into the ground.