• 易やさしい — easy; simple
• 貿易ぼうえき — trade
• 安易あんい — easygoing; simplistic
• 容易ようい — simple; easy
• 簡易かんい — simple; simplified
• 難易度なんいど — degree of difficulty
• 交易こうえき — commerce; trade
• 易者えきしゃ — fortune teller

Traditionally linked to the idea of “change,” 易 later expanded to mean “easy / simple.” It also appears in contexts of divination (e.g., the classic 易経), while in modern usage it’s common in everyday words like 易しい and compounds such as 貿易.

この問題もんだいは 易やさしいです。
This problem is easy.

彼かれは 貿易ぼうえき会社で 働はたらいています。
He works at a trading company.