If it has tracks, it's a tram. An electric bus which uses overhead powerlines is a trolleybus. https://en.wikipedia.org/wiki/Tram https://en.wikipedia.org/wiki

If it has tracks, it's a tram. An electric bus which uses overhead powerlines is a trolleybus. https://en.wikipedia.org/wiki/Tram https://en.wikipedia.org/wiki/Tram https://en.wikipedia.org/wiki/Trolleybus https://en.wikipedia.org/wiki/Trolleybus