年金

1. Origins, structure, and basic meaning

• Structure: The social-security noun 年金 (ねんきん) denotes regular pension payments received under qualifying conditions.
• Basic usage: An individual may receive 年金の通知, while the overall system is called 年金制度.

2. Common pitfalls and similar expressions

• Periodic pension payments and the system
  • It denotes periodic benefits paid under defined conditions and the system behind them, rather than a one-time grant.