要因

1. Origins, structure, and basic meaning

• Structure: 要因, read よういん, combines a key element 要 with causal basis 因.
• Basic usage: It denotes an element contributing to a result, as in 成功の要因 or 集中力を下げる要因.

2. Common pitfalls and similar expressions

• Scope and context
  • A 要因 may be one among several contributing factors, so it is not always identical to a single direct 原因.