This is the 756th most frequent Swedish word.
östersunds
"Östersunds" is the possessive form of "Östersund," a city in Sweden.
Here, 'Östersunds' is used as a proper noun indicating the name of the place, specifically the city.
Jag har en vän som bor i Östersunds stad.
I have a friend who lives in the town of Östersund.
In this case, 'Östersunds' is part of the name of a sports team, highlighting association with the city of Östersund.
Fotbollslaget Östersunds FK har gjort framsteg i sin liga.
The football team Östersunds FK has made progress in their league.
Here, 'Östersunds' shows possession, indicating that the culture and nature belong to or are characteristic of Östersund.