The new definition of Fungible seems to be: Trustworthy. ..... An actual closer definition: Physical money and cryptocurrencies are “fungible,” meaning they can be traded or exchanged for one another. They're also equal in value—one dollar is always worth another dollar; one Bitcoin is always equal to another Bitcoin. Apr 29, 2021 --Forbes .......... “Non-fungible” more or less means that it's unique and can't be replaced with something else. Not easy to exchange or mix with other similar goods or assets. The Lucy memes on the blockchain are non-fungible.