What do we call the medieval system of exchanging goods without money?

The story behind the answer

It refers to the direct exchange of goods or services without using money. In much of medieval Europe, coinage was scarce and unevenly minted, so peasants and townsfolk commonly swapped grain for tools, wool for salt, or a day’s labor for rent. Lords often collected dues in kind, and local markets kept accounts with memory or tally sticks rather than cash.

Major fairs and long-distance merchants increasingly used coins, credit, and bills of exchange, but everyday village life leaned on this moneyless trade. By contrast, feudalism describes the political-military hierarchy of lords and vassals, and manorialism the management of estates—neither names the act of swapping goods itself.