Railway line is a term that describes the tracks and infrastructure that trains use to operate on a specific route. There are a few different synonyms for this term that can be used interchangeably. For example, some people refer to a railway line as a railroad track, a railway system, or simply a rail line. Additionally, in some countries, people may use terms like metro, tube, or subway to describe a railway line that operates within a particular city or region. No matter what term is used, the idea remains the same: a railway line is a vital infrastructure element that allows trains to transport people and goods quickly and efficiently between different locations.