電容( Capacitance)

The product of QV (charge x voltage) gives you the physical quantity "energy", NOT capacitance.
The physical interpretation of capacitance is the "capacity" of an object to store charges, similar to a tank in storing water. If an object has high capacity, this indicates that it can keep large quantity of charges with only a small rise in potential.
This is just like a tank of large base area can store large amount of water with a small water height as compared with one with small base area, which for the same volume of water stored, would have a larger height of water.

funny Q