交易

1. Origins, structure, and basic meaning

• Structure: 交易 is read as こうえき and functions as a noun or with する for trade or commerce between countries or regions.
• Basic usage: Mark the trading partner with と in 国との交易 and 地域と交易してきた.

2. Common pitfalls and similar expressions

• Contrast with 貿易
  • 貿易 is the common term for international import and export, while 交易 suits a more historical or literary account of exchange between countries or regions.
• Contrast with 取引
  • 取引 focuses on an individual transaction or deal between parties; 交易 denotes the broader trading activity maintained between ports or regions.