The term 'Coal Train Component' refers to a hoppercar, which is a type of railroad freight car used to transport coal and other materials. It is an open-top car with a large bin that can be filled with the material to be transported. The hoppercar has a bottom opening that allows the material to be unloaded when it reaches its destination. Hoppercars are an important part of the coal train system, as they are used to transport large amounts of coal from one location to another.