What is a decentralized exchange or Dex Imagine an open a market where buyers And sellers trade directly with each Other Sellers List their goods buyers Place orders and transactions occur Between them with no middleman in Between now imagine that happening on a Global scale this is a decentralized Exchange where cryptocurrency Transactions take place on Smart Contracts without the need for a central Authority overseeing the entire process It gives users full control over their Assets and removes dependency on a Single entity thus enhancing security It's a decentralized and peer-to-peer Approach to trading click the link in The comments to learn more about Decentralized Exchange
Bitcoin 
Ethereum 
Tether 
BNB 
Solana 
USDC 
XRP 
Lido Staked Ether 
Dogecoin 
TRON
Coinbase is a popular cryptocurrency exchange. It makes it easy to buy, sell, and exchange cryptocurrencies like Bitcoin. Coinbase also has a brokerage service that makes it easy to buy Bitcoin as easily as buying stocks through an online broker. However, Coinbase can be expensive due to the fees it charges and its poor customer service.