了解

1. Origins, structure, and basic meaning

• Structure: 了解 is read りょうかい and means understanding and accepting information or circumstances.
• Basic usage: Use 了解しました to acknowledge information, or 事情を了解する for understanding the circumstances.

2. Common pitfalls and similar expressions

• Acknowledgment versus permission
  • 了解 focuses on understanding or accepting something; 許可 focuses on allowing an action.