切れる

1. Origins, structure, and basic meaning

• Structure: 切れる is read きれる and can describe something snapping or a blade cutting well.
• Basic usage: Use ひもが切れる for a cord snapping and 包丁がよく切れる for a knife that cuts well.

2. Common pitfalls and similar expressions

• Cutting something versus something snapping
  • ひもを切る describes someone cutting a cord; ひもが切れる describes the cord snapping.