capacitance

This term describes a physical property of a component or a geometric arrangement of conductors. It evokes the image of a reservoir or a bucket that can hold a specific amount of electrical energy before it is full. It is a technical term used almost exclusively in physics, electrical engineering, and electronics. While it shares a root with capacity, capacitance is a precise measurement of electrical storage. Using it in a non-technical sense to describe a person's ability or a room's size would be incorrect and would sound jarring to a native speaker.