護符

1. Origins, structure, and basic meaning

• Structure: 護符 (ごふ) is an amulet believed to protect against harm. It appears as a carried object and a charm attached to a door.
• Basic usage: A travel-safety charm goes into a pouch; an old charm is attached to a door in a story.

2. Common pitfalls and similar expressions

• Portable travel charm and protective object on a doorway
  • The first を is an object someone keeps; passive が貼られていた is an attached state. Protective efficacy belongs to belief or fiction, not a scientific claim.