longevity

1. Origins, structure, and basic meaning

• Structure: 寿 relates to lifespan or living long; its on-reading is じゅ.
• Basic usage: 寿命(じゅみょう) means lifespan or service life, while 長寿(ちょうじゅ) means longevity.

2. Common pitfalls and similar expressions

• The length of a life or service and living long
  • 寿命 applies to an animal's lifespan and to a battery's service life. In the example, 寿命を迎えて means that the battery reached the end of its life.
  • 長寿 means living long, as in celebrating a grandmother's longevity. Unlike 寿命, which refers to a duration, it focuses on a long life.