Cryptocurrency isn't regulated by any government. It isn't created "out of thin air" as fiat currency is. When it comes to bitcoin There will only ever be a finite amount of bitcoin, which controls it's value. Once all bitcoin is mined there will be 21 million in existence, that's it. No one can ever create more (as is done every year with fiat currency). When fiat currency is created by central banks they reduce the value of the existing currency in the market, which results in inflation of prices. This is why the price of every day things (that haven't changed in 50 years, like groceries or utilities) have gone up in price over time. There's a lot of other differences, but it's better for you to read up on them.