Answer2:The main difference between PoS and PoW is that in PoS the validators are rewarded for staking their coins, while in PoW the miners are rewarded for verifying and validating transactions. In PoS, the validators are selected based on their stake, which is the amount of coins they have in the network. This means that those with more coins have a higher chance of being selected as a validator. This can lead to centralisation of the network if a small number of validators control a large amount of the coins. This is why it is important to have a well-designed PoS system that incentivises decentralisation and prevents centralisation.
