khaganate
A khaganate is a political entity ruled by a khagan, a title meaning “khan of khans” in Turkic and Mongolic languages. The term is used by historians to describe states where the supreme ruler claimed the prerogatives of a khagan. A khaganate differs from a khanate, in which the ruler is simply a khan; the khagan holds higher authority, often presiding over a confederation of tribes or a multiethnic realm.
Historically, khaganates appeared across the Eurasian steppe and Central Asia. The Xiongnu and later the Göktürk
Governance in a khaganate typically combined centralized authority with multiethnic administration and tribal or noble support
See also: Khanate, Great Khan, Mongol Empire, Turkic khaganate.