Вятка

Etymology
Per Vasmer, presumably related to the ethnonym Vyada found on the upper and possibly the original name of the river, which may go back to 🇨🇬, used as a hydronym.

Proper noun

 * 1)  former name of Kirov, a city in Russia
 * 2)  river in and Tatarstan, Russia, passing through the city of Kirov (formerly )