Is an ETF a derivative?

Could you please clarify for me if an ETF, or Exchange-Traded Fund, qualifies as a derivative? I've heard some conflicting opinions on this matter, and I'm trying to get a clear understanding. ETFs are known for tracking the performance of a specific index or basket of assets, but does this structure make them akin to derivatives in any way? I'm particularly interested in understanding the risk profile and legal classification of ETFs in comparison to derivatives. Could you enlighten me on this matter?