What is the difference between USDE and ENA?

Could you please explain to me the fundamental distinctions between USDE and ENA? I'm particularly interested in understanding their respective functionalities, use cases, and any significant differences in their underlying technologies or mechanisms. Additionally, I'd like to know if there are any specific advantages or disadvantages associated with each one. Could you also clarify any regulatory differences or market acceptance trends that might affect their usage? Finally, are there any potential risks or challenges that investors should be aware of when considering these two options? Thank you for your assistance in clarifying these points.