Cryptocurrency is a form of digital or virtual currency that uses cryptography for security and operates independently of a central authority, such as a government or bank.  

While cryptocurrencies can be used to facilitate transactions and store value, they are not considered traditional "money" in the sense of physical currency issued by a government or central bank.  

However, cryptocurrencies like Bitcoin, Ethereum, and others have gained acceptance and are increasingly being used as a medium of exchange, investment, and store of value by individuals and businesses around the world. The value of cryptocurrencies can be volatile and is subject to market fluctuations.