This is the 4548th most frequent Swedish word.
östersjön
The Baltic Sea.
In this sentence, 'Östersjön' is used as the subject of the sentence, referring to the geographical entity 'the Baltic Sea'.
Östersjön är en central plats för handel i norra Europa.
The Baltic Sea is a central location for trade in northern Europe.
Here, 'Östersjön' serves as the object of the sentence, indicating the entity relied upon by many species.
Många arter är beroende av Östersjön för sina livsmiljöer.
Many species depend on the Baltic Sea for their habitats.
In this example, 'Östersjön' is part of a prepositional phrase, indicating the location where the activity (boat trip) occurred.