This is the 5849th most frequent Korean word.
분당구
"Bundang-gu" is a district in Seongnam, South Korea.
Here, '분당구' indicates the subject of the sentence, used to describe its characteristics as a location.
분당구는 매우 환경 친화적인 도시로 알려져 있습니다.
Bundang-gu is known as a very environmentally friendly city.
The word '분당구' is utilized here as a proper noun referring to a specific administrative district.
분당구는 대한민국 경기도 성남시의 한 구입니다.
Bundang-gu is a district of Seongnam-si in Gyeonggi-do, South Korea.
In this sentence, '분당구' is used in a locational context to specify where the speaker resides.