Volume and capacity are two different words that are most times confused to be the same thing. The volume shows the amount of space covered by an object in three-dimensional space, while capacity refers to the ability of an object to hold a substance such as a liquid, solid, or gas.
Solids and hollow objects have volumes, while hollow objects are the only ones that can have the capacity. An example of a volume is a cube, cuboid, cylinder, and cone, while an example of a capacity is a cone, cylinder hemisphere, and hollow.
Volumes are measured in cubic units, while capacity can be measured in units. Volume can be calculated by measuring the length, height, and width of an object, while capacity is measured more in ml or cc.