Can't it be both money and currency? Isn't a currency be used as a money? As for me, Bitcoin is both. It is a currency for trading, and a money that can be used for buying. There's no chance that that it would only be a currency nor only be money. Why? If ever it was only a currency, then there's no chance that stores nor services accept it as a mode of payment. And if ever it was only a money, then there's no such thing as Bitcoin trading and there would be no crypto market at all.