This is the 5268th most frequent Swedish word.
east
The Swedish word "öst" means "east" in English.
In this sentence, 'österut' is used as an adverb describing the direction of the travel towards the east.
De reste österut för att utforska nya områden.
They traveled eastward to explore new regions.
Here 'öster' is used as a location indicating the eastern direction.
Solen går upp i öster.
The sun rises in the east.
'öster om' is used as a prepositional phrase specifying the city's location relative to the river.