S: (n) change (money received in return for its equivalent in a larger denomination or a different currency) "he got change for a twenty and used it to pay the taxi driver"
S: (n) change (the balance of money received when the amount you tender is greater than the amount due) "I paid with a twenty and pocketed the change"
S: (n) ready cash, cold cash, ready money (money in the form of cash that is readily available) "his wife was always a good source of ready cash"; "he paid cold cash for the TV set"