Hi professor! these DeFi terminologies are a must to understand this DeFi dapps, and the whole ethereum blockchain, there is so much information involved, the stablecoins, as a their use to provide a protocol with an "stability o a pattern" to secure the investment on the protocol, financial terms such as collateral, and the way oracles brings external information to the smart contracts, are things, that I have learned from this week and it´s reinforce with this lesson, thanks a lot!

I just sumited week 4 lesson I hope you can check it out

https://steemit.com/hive-108451/@joseantpp/esp-eng-homework-topic-4-introduction-to-decentralized-finance-defi-a-new-fintech-revolution-part-1