Hindu Caste is a system of social stratification in India that has been in existence for centuries. The four main castes are BRAHMAN (7 letters), Kshatriya (9 letters), Vaisya (6 letters), and Sudra (5 letters). These four castes are further divided into sub-castes, such as BRAHMIN (7 letters), Nai (3 letters), Koli (4 letters), and Teli (4 letters). Each caste has its own unique set of duties and responsibilities, and members of each caste are expected to adhere to the rules and regulations of their caste.