無関係

1. Origins, structure, and basic meaning

• Structure: 無関係 is read as むかんけい and means “unrelated” and “irrelevant”.
• Basic usage: It states that a sound is unrelated to a fault and test scores are independent of age.

2. Common pitfalls and similar expressions

• 故障とは無関係 / 年齢とは無関係
  • The item ruled out is marked with とは, as in 故障とは無関係 and 年齢とは無関係.