noun
barter system
Refers to a system of trade where goods or services are exchanged directly without using money.
その国では交換貿易制がまだ広く行われている。
The barter system is still widely practiced in that country.
物々交換 refers to the act of bartering itself, while 交換貿易制 refers to the system or framework of barter trade.
Compound of 交換 (exchange), 貿易 (trade), and 制 (system).