What is the difference between ancient Greek swords and Roman swords?
The Greek swords came first before the Roman swords. Both are recognizably similar on the account that Romans absorbed Greek culture and by extension, its battle techniques and armaments. What the Greek swords differ from the ancient Roman swords was that the former is leaf-shaped blade. The Romans copied the design, but they developed other swords which were more distinctly straight-bladed types. See Roman swords for more discussions.