Nikāya

Nikāya is a Pāḷi word and literally means "volume". It is similar to the Sanskrit word Agama meaning "basket" It is also used to mean "collection", "assemblage", "class" or "group" in both the Pāḷi and Sanskrit languages. It is most commonly used in reference to the Buddhist texts of the Sutta Piṭaka, but can also refer to the monastic divisions of Theravāda Buddhism. In addition, the term Nikāya schools is sometimes used in contemporary scholarship to refer to the early Buddhist schools, of which the Theravāda is one.

Read more about Nikāya:  Text Collections, Monastic Divisions