換気

1. Origins, structure, and basic meaning

• Structure: 換気 is read as かんき and means “ventilation”.
• Basic usage: The examples show changing room air through an open window and running an exhaust fan while cooking.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It is the exchange of indoor air with outside air; note the related verb 換気する and appliance 換気扇.