What are the characteristics of compression springs?

What are the typical characteristics of compression springs? Compression springs utilize multiple open coils (such as gravity pressing down on wheels or the body pressing on a mattress) to provide resistance, consisting of metal wires and other pitch windings and fixed wire diameters.
That is to say, they pushed back to resist external pressure. Compression springs are usually made of metal wires with equal pitch windings and fixed wire diameters.
In addition, there are also conical compression springs or a combination of conical and linear springs.
Compression springs can be used to resist pressure and/or store energy. Circular metal wires are commonly used for compression springs, but there are also square, rectangular, and special shaped compression springs.
The steel wire spring of compression spring is used for all types of springs from household appliances to motor equipment, motors, etc., as it is the required type of spring.
The design of compressed wires for compressed springs attempts to return the spring to its original shape, thereby pushing the load back.