障子

1. Origins, structure, and basic meaning

• Structure: 障子 (しょうじ) is a noun for a Japanese sliding door made with a wooden lattice and paper.
• Basic usage: 破れた障子に紙を張る makes the torn door the surface receiving new paper, while 光が障子を通して入る describes morning light entering through the screen.

2. Common pitfalls and similar expressions

• Applied paper and the door itself
  • 障子に新しい紙を張る shows paper as a component of the door. Reducing 障子 to one sheet of paper would miss the door structure through which light passes in 障子を通して.