In Spot, you buy the cryptocurrency directly and actually own it, and you can hold it or sell it whenever you wish. The price reflects the true market value. This type is suitable for long-term investors or for traders who prefer simplicity.
In Futures, you do not own the asset, but trade contracts based on the expectation of the price going up or down, and you can make profits whether in a bull or bear market. However, it carries higher risks due to leverage.
In summary: Spot for buying and holding, Futures for speculation and quick profits but with higher risk.