This is the 6979th most frequent Swedish word.
polens
"Polens" in Swedish means "Poland's" (possessive form of Poland).
Here, 'Polens' shows possession, signifying that the capital being discussed—Warsaw—belongs to Poland.
Polens huvudstad är Warszawa.
Poland's capital city is Warsaw.
In this instance, 'Polens' highlights that the culture under discussion is associated with or belongs to Poland.
Jag läste en artikel om Polens kultur.
I read an article about Poland's culture.
Here, 'Polens' denotes that the history mentioned pertains to Poland, indicating possession or association.