I think depending on each platform, cryptocurrency can also be traded like a stock exchange or forex. In the future, crypto could have a wider range of trade, unlike the current exchange. The difference is only in digital assets and physical assets.
The main differences are those sold by digital products and physical products. Changes in cryptocurrency prices are very fast, forex and stocks are slower. For certain countries, cryptocurrency is prohibited, while forex and stocks are not prohibited for transactions. The most obvious difference is anonymous cryptocurrency, while forex and shares of the owner are known.