What is the difference between Caste System and Class System?

A very popular belief among the Indians is the fate that some are born to be slaves; some are born to be of the royalty, while others are in-between. Though this was forbidden among the Indians, it is already a class system that they practice in every nook and cranny of the country. However, is this statement class system the same as a caste system? The caste system is a very complex social system which determines the social gotten when you are given birth to.

There are four ways by which your social status can be determined by the caste system: First; when you marry someone else that is not in your caste. Secondly: the nature of the job that you do. Thirdly: When you indulge in social ideology or religious belief that reinforces your caste system. And fourthly: when you socialize with the people in their own caste system. One main difference between the class system and the caste system is that the class system can still be changed.