畳

1. Origins, structure, and basic meaning

• Structure: 畳 (たたみ) is a Japanese floor mat. It appears as a scent source and surface for sitting.
• Basic usage: New tatami fragrance fills a room; a grandfather sits on the mats to read.

2. Common pitfalls and similar expressions

• Scent of new flooring and floor surface used for sitting
  • 畳の香り is material property; 畳の上に is spatial location. Distinguish it from verb 畳む meaning fold.