el cambio NOUN change; (small) change; exchange; bureau de change
Cambio is a common word with several meanings. In one meaning, it’s change in general:
un brusco de temperatura a sudden change in temperature
el cambio climático climate change
You can also use cambio in the same way that you use change in English to refer to money:
¿Me das cambio de cien? Can you give me change of a hundred?
¿Te han dado bien el cambio? Have they given you the right change?
If you’ve been to Spanish-speaking countries you’ll have seen the cambio sign, indicating a bureau de change. The word also refers to the exchange rate:
¿A cuánto está el cambio hoy? What’s the exchange rate today?