Crypto airdrops are like getting free tokens as a gift. Imagine you have a certain cryptocurrency, and then, out of the blue, you receive some additional tokens for free. It's a way that some blockchain projects use to thank their users or attract more people to use their digital coins.

As for Uniswap, it's a platform on the internet where you can trade different digital currencies. Sometimes, projects that create new digital coins might decide to give away some of those coins for free to people who use Uniswap. It's like a little bonus to encourage people to be part of their community.