A freight train is a type of railway train that transports cargo, such as goods and materials, from one place to another. It typically consists of a long line of railcars or containers loaded with various types of freight, pulled by one or more locomotives at the head of the train. Freight trains can travel long distances and are an important mode of transportation for businesses and industries that rely on shipping goods over great distances. The phrase "freight train" is often used metaphorically to describe something that is moving quickly, powerfully or inexorably forward with great force or momentum.