爆発

1. Origins, structure, and basic meaning

• Structure: 爆発 (ばくはつ) is an action noun for a sudden bursting release of energy caused by pressure, heat, or similar forces.
• Basic usage: 爆発を想定した訓練 makes an explosion the emergency assumed in a drill, while 小屋が爆発して reports a building bursting in a film.

2. Common pitfalls and similar expressions

• Simulated hazard and depicted event
  • 爆発を想定する prepares for an event before occurrence, whereas 小屋が爆発する occurs within a film. The drill example does not say a real explosion happened.