Is Monero based on Ethereum?

Could you please clarify if Monero is indeed built upon the Ethereum platform? I've heard conflicting opinions about this, and I'm quite curious to know the truth behind it. As I understand, Ethereum is a smart contract platform, while Monero is known for its privacy-oriented features. So, is there any direct link or underlying technology shared between these two cryptocurrencies? I'd appreciate it if you could provide a concise yet informative answer to this question.