疑問

1. Origins, structure, and basic meaning

• Structure: 疑問 is read as ぎもん and means a doubt or unresolved question arising when something is unclear or unconvincing.
• Basic usage: Use 疑問が残る for a question remaining unresolved and 結果に疑問を感じる for feeling doubt about a result.

2. Common pitfalls and similar expressions

• Difference between 疑問 and 質問
  • The former is an internal doubt or unresolved issue, whereas the latter is a question actually asked of someone to obtain an answer.