In the crypto world, a block is like a page in a really boring book that nobody wants to read, but everybody needs to keep track of. It's a record of all the transactions that happened on the blockchain during a certain period of time.
Miners are like the overachieving students who volunteer to write each page of the book, and they get rewarded with a little bit of crypto for their hard work.
Once a block is written, it gets added to the end of the book, and the process starts all over again. It's like a never-ending story, but instead of fantastical adventures, it's just a bunch of nerds trading magic internet money.
Example
"I was trying to send some Bitcoin to my friend, but the transaction got stuck in the mempool for hours. I guess the miners were too busy working on the next block to deal with my measly little transaction."
"I heard that the new block just got mined, and it included a transaction for 10,000 BTC. Somebody's got deep pockets!"
