What is the difference between fungible and non fungible goods?

Fungible goods are items that can be exchanged or replaced with others of the same kind and value, such as currency or stocks, where each unit is identical and holds the same value. Non-fungible goods, on the other hand, are unique and cannot be exchanged on a one-to-one basis, as they possess distinct characteristics, like art pieces, real estate, or collectibles. Essentially, fungible goods are interchangeable, while non-fungible goods are not.