"The difference between a train and a tram is that a train runs on its own tracks separate from other vehicles; a tram shares at least part of its track network with other vehicles such as cars. In some cities, the word train can refer to the vehicles that run on a tram network, on a traditional train network, or even on a metro network. Trams can also be referred to as street-cars or light rail depending on where they’re being used."

ถ้าตามคำนิยามนี้ Monorail (ไม่ใช่ Real) คือ Train