A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor.
CONDENSER
Condensor is a device That is used to convert form vapour into liquid.
EVAPORATOR
An evaporator is a device in a process used to turn the liquid form of a chemical substance such as water into its gaseous-form/vapor.
EXPANSION VALVE/DEVICE
The expansion valve removes pressure from the liquid refrigerant to allow expansion or change of state from a liquid to a vapor in the evaporator.