• 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.