What is figurative language for the sentence when swimmer finished race her lungs were on fire?

The sentence "When the swimmer finished the race, her lungs were on fire" uses metaphor.

Here's why:

* Metaphor: A metaphor directly compares two unlike things without using words like "like" or "as."

* In this case, the swimmer's lungs are not literally on fire. The phrase "on fire" is used to describe the intense burning sensation she feels in her lungs due to the exertion of the race.

Let me know if you'd like to explore other figurative language examples!