Dualism (Indian philosophy)
Another form of dualism in Hindu philosophy is found in the Dvaita ("dualism") Vedanta school, which regards God and the world as two realities with distinct essences; this is a form of theistic dualism. By contrast, schools such as Advaita ("nondualism") Vedanta embrace absolute monism and regard dualism as an illusion ("maya").
Trialism
Cottingham introduced trialism after citing that Descartes' account of sensation and imagination has opened his official dualism under considerable pressure. He cited that an evaluation of the Cartesian writings on human psychology there is a grouping of not two but three notions - mind, body, sensation, hence the term trialism. According to cottingham, Descartes added the third category or notion " alongside thought and extension without proceeding to reify it as a separate substance." Thinkers such as Daniel Garber and Tad Schmaltz supported this by citing a letter in the correspondence between Descartes and Princess Elizabeth of Bohemia, which indicated that that he changed his mind from a dualistic view.