castes is a form of:

Caste



noun
1.
(one of the hereditary Hindu social classes, an exclusive social order) ជួរ, ទី, លំដាប់, ឋានៈ, ក្រុម, ថ្នាក់រៀន, វណ្ណៈ, ត្រកូល, ជាន់ថ្នាក់
Example: The lowest caste.
ENGLISH MEANING
noun
1.
One of the hereditary classes into which the Hindoos are divided according to the laws of Brahmanism.
2.
A separate and fixed order or class of persons in society who chiefly hold intercourse among themselves.
1.
category, class, denomination, genre, kind
2.
grade, order, rank, set