MONISM: a theory or doctrine that denies the existence of a distinction or duality in a particular sphere, such as that between matter and mind, or God and the world.
“Nondualism” is a modern, western New religious movement, with a reflexive-monist understanding of reality. It is typified by a syncretistic understanding of various religious traditions. According to nondualism, many forms of religion are based on an experiential or intuitive understanding of “the Real” Nondualism, a modern reinterpretation of these religions, prefers the term “nondualism”, instead of monism, because this understanding is “nonconceptual”, “not graspapable in an idea”.[note 8][note 9]
To these nondual traditions belong Hinduism (including Vedanta, some forms of Yoga, and certain schools of Shaivism), Taoism, Pantheism, Rastafari and similar systems of thought.
With increasing awareness of these systems of thought, the western spiritual and philosophical climate has seen a growing understanding of monism. Moreover, the New Thought and New Age movements embraced many monistic concepts during the twentieth century and continue up to the present day. – WikiPedia