手帳

1. Origins, structure, and basic meaning

• Structure: 手帳 is read as てちょう and is a noun for a small portable notebook or planner used for schedules, notes, and personal information.
• Basic usage: A writing destination appears in 手帳に予定を書く, while the carried object appears in 手帳を上着に入れる.

2. Common pitfalls and similar expressions

• Notebook and planner
  • Notebook fits free-form notes, while planner fits a schedule-management context.
• Difference from ノート
  • ノート broadly means a notebook for study or records; 手帳 is usually compact and designed for personal portable use.