The difference between Monism and Pluralism

Monism as a noun (philosophy, religion):

The doctrine of the oneness and unity of reality, despite the appearance of diversity in the world.

Pluralism as a noun:

The quality or state of being plural, or in the plural number.

Pluralism as a noun (ecclesiastical):

The state of a pluralist; the holding of more than one ecclesiastical living at a time.

Pluralism as a noun (sociology):

A social system that permits smaller groups within a society to maintain their individual cultural identities.

Pluralism as a noun (philosophy):

The belief that values can be simultaneously antagonistic and incommensurable.