What is the difference between poly and polyx?

Could you elaborate on the key differences between Poly and PolyX? I've heard both terms in the cryptocurrency space but am not entirely clear on how they differ. Poly seems to be a decentralized finance platform, while PolyX appears to be a token related to it. Could you explain the technical and functional distinctions between the two? I'm particularly interested in understanding their use cases, potential benefits, and any interoperability features they might have. Additionally, how do they fit into the broader crypto ecosystem and what sets them apart from similar projects? Thank you for your insights.