Money is something you can (sometimes) exchange for wealth, but it’s not wealth itself.
When I say sometimes I mean that there are things you can’t buy: what those things are change from place to place and time to time. The classic formulation of the preconditions for capitalism includes the ability to buy land, labor and capital. In most places and times you couldn’t actually hire most people to work–they were bound to the land, their clans, or whatever or they could support themselves and sure didn’t want to work for someone else.
Likewise most land was inherited or in the commons and definitely not for sale. You couldn’t buy it.
Wealth is what you control (not own, control) that can be used to make something, grow something or support violent people.