樹齢

1. Origins, structure, and basic meaning

• Structure: 樹齢 (じゅれい) is a tree's age in years. It appears as recorded information and a value to determine.
• Basic usage: A sign states a large tree's age; trunk thickness alone cannot determine it exactly.

2. Common pitfalls and similar expressions

• Age recorded and age difficult to infer
  • The first が記される presents a value; the second を判断する is estimation. Thickness alone does not guarantee accuracy.