In practical terms, anarchy can refer to the curtailment or abolition of traditional forms of government and institutions. It can also designate a nation—or anywhere on earth that is inhabited—that has no system of government or central rule. Anarchy is primarily advocated by individual anarchists who propose replacing government with voluntary institutions.
The word anarchy comes from the ancient Greek ἀναρχία (anarchia) which combines ἀ (a), "not, without" and ἀρχή (arkhi), "ruler, authority". Thus, the term refers to the state of a society being without authorities or an authoritative governing body.