週

1. Origins, structure, and basic meaning

• Structure: Spelling: 週. Reading: しゅう. Core meaning: week.
• Basic usage: Representative examples: 次の週から新しい授業が始まります / 忙しい週だったが、日曜日は休めた.

2. Common pitfalls and similar expressions

• Calendar unit and a particular week
  • 次の週 is the particular week following a reference point, while 忙しい週 is a week considered as a period. The calendar reference determines which week is meant.