Cryptocurrency is a digital or virtual currency that uses cryptography for security. It operates independently of central banks and governments. While the most well-known cryptocurrency is Bitcoin, there are many others, such as Ethereum, Litecoin, and XRP.

The price of a cryptocurrency is determined by supply and demand on various online exchanges, and factors like market sentiment, news and announcements, and regulatory changes can affect it. The value of a cryptocurrency can fluctuate greatly within a short period of time, making it a highly volatile investment.