A subway station is a facility where passengers can board and disembark from trains that run on an underground or elevated railway system known as the subway. Subways are used for public transportation in many cities around the world, providing a fast and efficient way to travel through urban areas. The term "subway" refers specifically to the type of rail system, while "station" is the location where passengers can access it. So, a "subway station" is a place where people can catch a subway train to get around town or reach their destination quickly and easily.