There are three different kinds of springs.
1. Closed coil helical springs - Helical springs, in which wire is wrapped in a coil, are the most common springs. Closed coil helical springs can be designed to push, pull, or carry loads.
Equivalent springs - Equvalent springs are springs that replace combinations of springs - which can be springs in parallel, or springs in series.
Laminated springs - Laminated springs are semi elliptical springs, also known as leaf springs.
A closed coil helical spring can be subjected to two kinds of loads - Axial loads and Axial twists.
Equivalent springs are springs that replace combination springs. There are two kinds of combination springs - springs in series, and springs in parallel.
Laminated springs, also know as semi elliptical springs and leaf springs, are commonly used for the suspension in wheeled vehicles.