Monero is the leading cryptocurrency with a focus on private and censorship-resistant transactions. It is a decentralized cryptocurrency, meaning it is secure digital cash operated by a network of users. Transactions are confirmed by distributed consensus and then immutably recorded on the blockchain.
Most existing cryptocurrencies, including Bitcoin and Ethereum, have transparent blockchains, meaning that transactions are openly verifiable and traceable by anyone in the world.
Source: https://www.kucoin.com/news/en-monero-xmr-gets-listed-on-kucoin