What are two kinds of monism?

Two kinds of monism are physicalism and idealism. Physicalism asserts that everything is fundamentally physical, meaning that all phenomena, including mental states, can be explained in terms of physical processes. In contrast, idealism posits that reality is fundamentally mental or spiritual, suggesting that the material world is either dependent on or a manifestation of the mind. Both perspectives seek to unify the nature of existence, but they differ in what they consider to be the ultimate substance of reality.