Monism

Monism attributes oneness or singleness (Greek: μόνος) to a concept, such as to existence. Various kinds of monism can be distinguished:

• Priority monism states that all existing things go back to a source that is distinct from them; e.g., in Neoplatonism everything is derived from The One.^[1] In this view only the One is ontologically fundamental or prior to everything else.
• Existence monism posits that, strictly speaking, there exists only a single thing, the universe, which can only be artificially and arbitrarily divided into many things.^[2]

Source: Monism - Wikiwand