Somaka seems to be a name used to denote all the tribes of Panchalas. The word Somaka, means the one who belonged to the Lunar Dynasty. This name could have given by rulers of Solar Dynasty. The Kosala Kingdom ruled by Solar Dynasty of kings lay to the east of Panchala. So this name could have been coined by the Kosalas to denote the Panchalas. Thus the name could be collective to the whole of the Panchala tribes or specific to the tribes that lie close to Kosala, i.e. the tribes that dwell in the eastern parts of Panchala.