貼り紙

1. Origins, structure, and basic meaning

• Structure: 貼り紙 is read as はりがみ and is the stem 貼り of 貼る plus 紙, meaning a paper notice attached to a wall, door, or bulletin board.
• Basic usage: Use 貼り紙で知る when the notice is the information source and 貼り紙を出す when it is the item posted.

2. Common pitfalls and similar expressions

• Physical form of the notice
  • Unlike a spoken or electronic announcement, it is an actual sheet of paper posted in a visible place.
• Role marked by particles
  • で marks the notice as the medium through which information was learned; を marks the physical notice being posted or removed.