消防士

1. Origins, structure, and basic meaning

• Structure: 消防士, read しょうぼうし, means a firefighter who handles work such as putting out fires and rescuing people.
• Basic usage: It refers to someone responding to a fire or teaching children how to evacuate.
  • 消防士が煙の出ている建物へ駆けつけた。

2. Common pitfalls and similar expressions

• Long vowels
  • Both しょう and ぼう in 消防(しょうぼう) contain long vowels.