Not really. In PoW you convert money into electricity, then use that electricity to claim mining rewards. In PoS you lock down your money, then use it to claim

Not really. In PoW you convert money into electricity, then use that electricity to claim mining rewards. In PoS you lock down your money, then use it to claim minting rewards. The two are not fundamentally different, PoS just skips the "convert into electricity" part.