It's a difficult question. You can earn money from a power but you also have more power using money. I'll choose money because money will help you make friends with power people
I think everything is possible with money. You can get power with money if you want. Sometimes an educated person becomes worthless to a stupid moneyed person. People respect a fool with money these days. So I think money is power.
you may have loads of money, but due to your social position people may not want to have any business with you, so seems like power can't always be bought with money, right? like in the middle age