This is the 3177th most frequent Korean word.
경찰서
Police station.
In this sentence, '경찰서' refers to the physical building or location of the police station where someone went.
나는 어제 경찰서에 갔습니다.
I went to the police station yesterday.
Here, '경찰서' is used to simply identify the place of the police station, mentioning its location without referencing any specific activity.
경찰서는 도시의 중심에 위치하고 있습니다.
The police station is located in the center of the city.
This sentence uses '경찰서' to signify the place where one performs official actions such as reporting an incident.