Centre of mass and Center of gravity

Centre of mass noun - Point representing the mean position of the matter in a body.

Center of gravity and centre of mass are semantically related. In some cases you can use "Center of gravity" instead a noun phrase "Centre of mass".

Center of gravity noun - The point within something at which gravity can be considered to act; in uniform gravity it is equal to the center of mass.

Centre of mass and center of gravity are semantically related. You can use "Centre of mass" instead a noun phrase "Center of gravity".