Two nations divided by a common language

Rod: When I move office I think I will take the tram to work.

Colleague: You mean the light rail?

Rod: Yes, the tram.

Colleague: No, trams are suspended under cables.

Rod: No, those are cable cars.

Colleague: No, cable cars run on rails with a cable running under the street.

Rod: No, those are trolleys cars.

Colleague: No those are electric buses.

Rod: No, those are trolley buses.

Colleague: Doh!

Rod: Doh!