In Spanish, "caro" means "expensive" or "dear" when referring to a person, while "carro" means "car" or "cart." The difference lies in the meanings and usage of the words. "Carro" has different meanings depending on where you are.

In Mexico, the word 'coche' is widely used to mean car, whereas in South America, the words 'carro' or 'auto' are more common.