What are DeFi derivatives?

What exactly are DeFi derivatives? Could you possibly break it down for me? I've heard a lot about them lately but I'm still a bit hazy on the concept. Are they similar to traditional financial derivatives, or do they have their own unique characteristics? Could you give me an example or two of how they work in practice? Also, are there any risks associated with investing in DeFi derivatives? I'd really appreciate your insights into this topic.