What is the difference between flow and Solana?

Could you please elaborate on the distinction between Flow and Solana? I'm curious to understand how they differ in terms of their architecture, scalability, and use cases. Could you also compare their consensus mechanisms and performance characteristics? Additionally, I'm interested in knowing about the communities surrounding these projects and their respective ecosystems. Would you be able to provide some insights on that as well? Thank you for your assistance in clarifying these points.