確信

1. Origins, structure, and basic meaning

• Structure: 確信 (かくしん) joins certainty 確 and belief 信 to denote firm conviction.
• Basic usage: 確信 is firm belief that a judgment is correct.

2. Common pitfalls and similar expressions

• Conviction versus verification
  • 確信した describes reaching that conviction; it is not itself the act of checking or verifying the facts.