確認

1. Origins, structure, and basic meaning

• Structure: 確認, read かくにん, is a noun that combines with する for checking an item or fact to make it certain.
• Basic usage: A direct check appears in 切符を確認する, while a notice of a confirmed result appears in the compound 確認メール.

2. Common pitfalls and similar expressions

• Check and confirmation result
  • Inspecting belongings is an action, whereas a reservation confirmation email communicates an established result.
• Looking versus verifying
  • The focus is not merely seeing something but making sure that its presence, content, or condition is correct.