A Gunga was a kind of Kanga (government office) facility as well as a Kokufu (ancient provincial office or capital) and Eki (an ancient station, supporting facilities for a traffic system under Ritsuryo system) and also pronounced in several ways such as Guuke, Gunge, Kooge and Gunin.
国府や駅とともに地方における官衙施設で、郡家（ぐうけ・ぐんげ・こおげ）・郡院（ぐんいん）という。