Proper noun
Donets
One of several rivers in Eastern Europe, including but not limited to:
Seversky Donets River, which flows through Russia and the Ukraine into the Don River.
By the end of the day, the 3rd SS Division had made very limited progress due in part to a tributary of the Donets river. Source: Internet
This country was situated between the lower course of the Danube river to the west, the Black Sea and the Azov Sea to the south, the Kuban river to the east and the Donets river to the north. Source: Internet