What is the purpose of a DeFi wallet?

Can you please explain the purpose of a DeFi wallet? I understand that it's related to decentralized finance, but I'm not entirely clear on how it differs from traditional cryptocurrency wallets. How does it enable users to access decentralized financial services, and what are some of the key benefits of using one? Also, is there any risk associated with using a DeFi wallet, and how can users ensure their funds are secure?