Each asset holds a value, often priced in U.S. dollars, which leads to another use case: trading and investing. Aside from stablecoins — which seek to stabilize the instability of cryptocurrencies by pegging an asset to something else, such as the U.S. dollar — most cryptocurrencies constantly fluctuate in price. You can trade between cryptocurrencies and national currencies (called fiat currencies) on exchanges, depending on the trading pairs available on the platform of choice.
DeFi stands for decentralised finance token. They are very complex but essentially aim to disrupt the finance world to enable people to follow and lend in peer-to-peer networks, without needing a bank.

Often, they coordinate with these outlets and have a few moles in the forums whose sole purpose is to get people excited about their projects so more start buying their coins, causing the price to rise.
Safemoon has a few unique features that have attracted both praise and criticism. For example, the Safemoon smart contract charges a 10% exit fee for holders who choose to sell. Half of this fee is ‘burned’, while the other is redistributed to remaining token holders, theoretically increasing the value of their holdings over time.