The difference between a cardholder and a wallet is that a cardholder is an object that has been designed to hold cards. A wallet, on the other hand, is an object designed to carry cash and other items.
A cardholder can be made of different materials such as metal or plastic. The most popular material for cardholders is typically metal due to its durability and its ability to hold multiple cards securely. A wallet, on the other hand, can be made from different materials as well but typically leather or fabric.