This is the 1702nd most frequent Korean word.
용산구
Yongsan-gu: Yongsan District, an administrative district in Seoul, South Korea.
In this sentence, "용산구" is used as the subject, referring to the specific district within Seoul.
용산구는 서울특별시의 중심부에 위치해 있습니다.
Yongsan District is located in the central part of Seoul.
Here, "용산구" provides the context for the location of the café, acting as a locative noun.
그는 용산구에 있는 유명한 카페를 방문했습니다.
He visited a famous café located in Yongsan District.
In this example, "용산구" is used to refer to the district historically to discuss changes over time.