Here (in Sydney) trams are called "Light rail", in Victoria they're called trams. A buggy is drawn by horses here. Although strange men in funny baggy trouserts sometimes pull odd looking metal sticks in "buggies". Babies are put into prams or strollers. A shopping "cart" is one of those 2 or 4 wheeled waterproof fabric covered contraptions that older people take their shopping home in.