oh my god , so that's what nomad means (people that don't stay in a special place and have no special homeland and travel in all their live ?)
till now I thought that nomads are the same as barbarians (you know : savege and wild people) with the diference that they live in the deserts.
in that case are you guy's sure that parthian were nomads , I have hurt that the place (todays Khorasan) was actually called Prathe which was homeland of the Parthians.