年齢層

1. Origins, structure, and basic meaning

• Structure: Written 年齢層 and read ねんれいそう, it denotes a group or band defined by a range of ages.
• Basic usage: It is used to analyze the age distribution of event participants or product users.

2. Common pitfalls and similar expressions

• Not an exact age
  • It categorizes a population range rather than stating one person's age.