The three dimensional concept of volume refers to the measure of the amount of space enclosed within solid. What is being investigated is the amount of space enclosed within the solid shape, leading to measures of volume of cubes, cuboids, cylinders and other three dimensional shape, in units derived from measurement of length, for example cubic centimetres and cubic metres.
The term capacity is used refer to measure of substances that can poured, that is, fluid. Hence the term "Volume Of Liquid" is used to refer to the investigations of amounts of liquids or solid analogies like sand, sugar and like which can poured between containers of different shapes and sizez. Capacity is measured in millilitres (ml) dan litres (l) in the metric system.