This is the 2789th most frequent Russian word.
омск
Omsk is a city in southwestern Siberia, Russia.
Oмск is used as a proper noun to refer to the name of the city in Russia.
Омск — это город в России.
Omsk is a city in Russia.
Oмск is used as a destination, indicating the place where the action of going is directed.
Я собираюсь поехать в Омск этим летом.
I am planning to travel to Omsk this summer.
Oмск is used in the genitive case (Омска) to indicate possession or association with the city.