The Concio (from the Latin contio, "assembly"), in the Republic of Venice, was the general assembly of freemen (citizens and patricians) from which the Doge was elected. It existed between the years 742 and 1423, although it was mostly ceremonial after the Serrata del Maggior Consiglio passed power into the hands of the aristocratic class.
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The Commune of Venice (Latin: Commune Veneciarum) is the title with which the government of the city of Venice and its Republic was designated from 1143. The municipality, similar to other medieval municipalities, was based on the popular power of the assembly, called Concio in Venice. It represented the patriciate of the city with a system of assemblies including the Great Council, Minor Council, Senate and the Council of Forty.