Among the many castes, the slave castes are the most special. People belonging to these castes are not accepted by others as common citizens. However, they are treated in different ways according to their use and their private rights.
For instance, the serfs are at the bottom of the hierarchical system. They earn a life by working for their master on his estate. As a return, they could get food and lodging, but they won't get themselves ownership on any property. On the contrary, Villeins do the same work to feed and accommodate themselves, but they are given the right to possess property to themselves. Moreover, Gladiators even could engage themselves in fight so as to earn money and regain their freedom one day in the future.
