Both volume and capacity are properties of any three-dimensional object. The volume of an object is how much space it takes up, while its capacity is how much solid, liquid, or gas it can hold. Cubic units are used to measure volume. On the other hand, capacity can be measured in many different ways, such as gallons, liters, pounds, etc. To figure out how big something is, we need to know its length, width, and height. cc or ml are used to measure capacity.