Is QQQ better than S&P?

Could you elaborate on whether QQQ is superior to the S&P? I'm curious to understand the key differences between these two investment vehicles. When it comes to performance, does QQQ typically outperform the S&P? Also, how do they differ in terms of risk and volatility? Is QQQ more suitable for aggressive investors, while the S&P is more geared towards conservative strategies? Additionally, could you provide some insights into their respective compositions and the sectors they focus on? I'm trying to make an informed decision about my investment portfolio and your insights would be greatly appreciated.