2526: mediterranean Nov 12, 2021

The name for the Mediterranean is from Latin, but it isn't what the Romans called it. They called it Mare Nostrum (Our Sea) or occasionally Mare Internum (Interior Sea) but never Mediterraneum Mare, which is from Late Latin, after the collapse of the empire. 'Mediterraneus' anyway doesn't specifically refer to water and literally means 'middle of the earth', so if the term was used by the Romans, it could have had a broader understanding. This was adopted into English via French, and beforehand the Old English 'Wendelsæ' was used, named for the Germanic Vandals who occupied the area of the former Western Roman Empire.

2312: The Use of the Term 'Byzantine Empire' Apr 15, 2021

The name for the Byzantine Empire as such really only came after the fall of the empire itself for complex religious and political reasons. For its near eleven centuries of existence after the fall of the city of Rome (and with it, the western half of the classical Roman Empire) it was known as the Roman Empire, or in Medieval Greek, Βασιλεία Ῥωμαίων (Basileía Rhōmaíōn). It was only in the Renaissance that Europeans—now with a goal of reviving and adapting many aspects of Classical Greek and Roman culture and thought—wished to draw a distinction between the ancient Latin-speaking, pagan Rome and later Christian, Greek-speaking Roman Empire, that the term Byzantine, from the Ancient Greek 'Byzantion', was renewed. That said, this term actually predates (ancient Roman) Emperor Constantine's move of the capital from Rome, and renaming of the city of Byzantion as Constantinople.