Yes, engine displacement and CC (cubic centimeters) are often used interchangeably to refer to the same thing. Engine displacement is a measurement of the total volume of all the cylinders in an engine, usually expressed in cubic centimeters (cc) or liters (L). It represents the total capacity or size of the engine and is an important specification used to classify and compare different engines. For example, a motorcycle engine with a displacement of 500cc means that the total volume of all the cylinders in the engine is 500 cubic centimeters.