A pool in cryptocurrency refers to a group of miners or validators who combine their resources to increase their chances of earning rewards. By working together, participants can share the computational power required to solve complex cryptographic problems more efficiently.When the pool successfully adds a new block to the blockchain, the rewards are distributed among the members based on their contributions. This approach makes mining more accessible for individuals who may not have the resources or technical skills to operate on their own.There are different types of pools, such as mining pools for proof-of-work coins and staking pools for proof-of-stake coins. Each has its own structure for how rewards are calculated and distributed.Joining a pool can lead to more consistent earnings, as the rewards are shared, reducing the variance associated with mining alone. However, it can also involve fees and less control over the mining process, as decisions may be made collectively by the pool operators.