A separate and fixed order or class of persons in society who chiefly associate with each other.
Hyponyms: Brahmin, Kshatriya, Shudra, Vaishya, varna
Any of the hereditary social classes and subclasses of South Asian societies.
A class of polymorphous eusocial insects of a particular size and function within a colony.
The usually informal hierarchy of authority or command, often partial or approximate, as determined by the especially natural propensity for domination of different members of a specific group over each other, such as older brothers and sisters over their younger siblings.
The natural hierarchy of social status and dominance occurring in a group of birds.