Aave (fun fact: the name is taken from the Finnish word for "ghost") is a decentralized, open-source, and non-custodial liquidity protocol on Ethereum. Depositors earn interest by providing liquidity to liquidity pools, while borrowers can obtain liquidity by tapping into these pools with variable and stable interest rate options. Aave Protocol is unique in that it tokenizes deposits as aTokens, which accrue interest in real time. It also features access to Flash loans and Credit Delegation as uncollateralized borrowing options.