This is the 8109th most frequent Polish word.
nysa
"Nysa" is a town in Poland.
In this sentence, 'nysa' is used as a proper noun representing the name of a city.
Nysa to piękne miasto na południu Polski.
Nysa is a beautiful city in the south of Poland.
In this sentence, 'nysa' refers again to the city, indicating a location relevant to the action.
Podczas podróży, przejeżdżaliśmy przez Nysę.
During the trip, we passed through Nysa.
Here, 'nysa' is used as part of the proper noun for a river, specifying geographical context.