"구" (gu) is a term used in South Korea to refer to a district or a division within a city. Each city in South Korea is divided into several 구, which serve as administrative units. These districts help organize local governance and provide public services to residents. In larger cities like 서울 (Seoul) or 부산 (Busan), there are many 구, each with its own unique characteristics and attractions. For example, 강남구 (Gangnam-gu) is known for its modern lifestyle and shopping, while 종로구 (Jongno-gu) is rich in history and culture.