consul, -lis
An official of the Roman state. In the period of the Republic, it was the highest military and political office: two consuls were elected each year. The consular office survived into the Imperial period (and further into the early Byzantine period), becoming a honorary post.

praefectus urbi (prefect of the city)
(later referred to as the eparch of the city) Αdministrator and virtual governor of Constantinople in the Early/Middle Byzantine Era. He was responsible for the surveillance and the harmonius life of the Capital. One of his responsibilities was to control the commercial and manufacturing activities of Constantinople. After 1204, however, the office began to diminish, while from the 14th century, his responsibilities were assumed by two officers, the so-called kephalatikeuontai of the capital.