Is VeChain part of Ethereum?

Could you please clarify for me if VeChain is affiliated with Ethereum in any way? I've heard of both cryptocurrencies and their respective blockchains, but I'm not entirely sure about their relationship. Is VeChain built on the Ethereum platform? Or does it operate independently? Also, how do the two blockchains differ in terms of functionality, scalability, and potential use cases? It would be helpful if you could provide a brief comparison. Thank you for your assistance in clarifying this matter.