Final answer:
Compression work is the term used to describe the work done on or by a system due to a change in volume under pressure.
Step-by-step explanation:
Pressure-volume work is also called compression work. It refers to the work done on or by a system due to a change in its volume under pressure. When a gas is compressed, work is done on the system and is considered as compression work. For example, when a piston is pushed down, the volume of the gas inside decreases and work is done by the gas.
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