This is one of the newer DeFi projects in the space but worth looking into imo. It's classic DeFi so the entire project revolves around smart contracts, but they have a really solid platform that lets you interact with the contracts. Essentially there are 2 tokens, the yB token and the yCASH token, and you can earn passive income through staking. There are several ways you can do this- staking UNI-V2 tokens from Uniswap after adding liquidity, or you can just stake the yB token directly. I've been following the project for a bit now so I may be able to answer any questions you may have about it, or you can just look on the website or Telegram.
Cliffnotes on "DeFi"? I keep seeing the term thrown around but reads like some buzzword for something I'm already familiar with.