What is the difference between Uniswap v2 and V3?

Could you please elaborate on the key differences between Uniswap's version 2 and version 3? Are there any significant upgrades or changes in terms of functionality, performance, or user experience? How do these differences impact traders and liquidity providers on the platform? Additionally, what are the potential benefits and drawbacks of each version, and how do they compare to other decentralized exchanges in the market?