Since the 1890s from France, the term "libertarianism" has often been used as a synonym for anarchism and was used almost exclusively in this sense until the 1950s in the United States; its use as a synonym is still common outside the United States.Accordingly, "libertarian socialism" is sometimes used as a synonym for socialist anarchism, to distinguish it from "individualist libertarianism" (individualist anarchism). On the other hand, some use "libertarianism" to refer to individualistic free-market philosophy only, referring to free-market anarchism as "libertarian anarchis

Anarchy (from the ancient Greek αναρχια, from αν, "not" +‎ αρχος "ruler", "absence of a leader", without rulers), has more than one definition. In the United States, the term "anarchy" typically is used to refer to a society without a publicly enforced government or violently enforced political authority. When used in this sense, anarchy may or may not be intended to imply political disorder or lawlessness within a society. However, this usage is not the traditional sense of the word.