"지하" (pronounced "jiha") is a Korean word that translates to "underground" in English. It refers to areas located below the surface of the ground, such as basements, tunnels, or subways. These spaces are often used for various purposes, including storage, transportation, and even living quarters. In urban environments, 지하 spaces are crucial for infrastructure. For example, many cities have extensive 지하철 (subway) systems that help reduce traffic congestion. Additionally, underground shopping malls and parking facilities are common in densely populated areas, providing convenience and maximizing land use.