Little anecdote: I've been to Paris a fair bit, and always enjoy a big bowl of cafe au lait with my morning pastry. First time in Nice, the waiter mocked me for my order. "Café olé!" he shouted and did a little flamenco dance. In the south of France, he explained, they call milky coffee "café crème". So there you go.
In the UK an Americano is just a watered-down espresso, no milk or cream.