消防車

1. Origins, structure, and basic meaning

• Structure: 消防車 (しょうぼうしゃ) is a compound noun naming an emergency vehicle and occupying ordinary nominal roles.
• Basic usage: In 赤い消防車が通り過ぎる, an actual vehicle is the moving subject; in 消防車の模型, the vehicle type specifies what the model represents.

2. Common pitfalls and similar expressions

• Vehicle and model are not the same referent
  • The head noun in 消防車の模型 is 模型, so the object is a model of a fire engine, not the engine itself. It should not be read as the real-vehicle subject in 消防車が.