forum
The roman agora. Public market-place, open square or place of assembly for judicial and other public business in a Roman town or city.

horreum (apotheke)
1. horreum, ὡρεῖον, σιτοφυλακεῖον (granary), ἀποθήκη: originally the term applied to a special place where fruits, harvest mainly, used to be garnered but later the depository place for every commodity was a horreum. During Late Antiquity the roman public horrea used to be structures where individuals deposited real assets and the state garnered harvest.In the byzantine era the horrea (αποθήκαι), administering by horrearius, used to be erected inside the imperial estates in order to secure the garnered produce.2. From the late 7th c. onw, there existed state αποθήκαι, administering by kommerciarioi, that served adminnistrative units or locations of special commercial importance in the field of the traffic of goods. Those αποθήκαι turned to become the royal commercia.

patrikios
(from lat. patricius) Higher title of honour, placed, according to the "Tactika" of the 9th and the 10th centuries, between anthypatos and protospatharios. It was given to the most important governors and generals. Gradually, however, it fell into disuse and from the 12th century did not exist any more.

praetorian prefect (praefectus praetorio)
Commander of the emperor's bodyguard under the principate. During the regne of Constantine I the praetorian prefect becomes a dignitary responsible for the administrative unit called the prefecture, which was subdivided into dioceses. In 400 A.D. there were four such praetorian prefectures, of Oriens, of Illyricum, of Illyricum, Italia and Africa and of Gallia. The praetorian prefects were second only to the emperor. The praetorian prefect of Oriens was the mightiest among prefects. His office is for the last time mentioned in 680.