This is the 9199th most frequent Russian word.
славянск
"Славянск" (Slavyansk) is a city in eastern Ukraine.
Here, 'Славянск' is used as a proper noun for the name of a city in Ukraine.
Славянск расположен на реке Казённый Торец.
Slavyansk is located by the Kazennyi Torets River.
In this sentence, 'Славянск' again denotes the city, emphasizing its infrastructural significance.
Славянск — это крупный транспортный узел.
Slavyansk is a major transportation hub.
'Славянск' is used historically here, referring to the establishment of the city in past centuries.