Exhaust vs Run-out

When to use each in English, with meaning, register, and examples.

Exhaust

Top 5,000 (fairly common)C1noun

Run-out

Top 2,000 (common)
Most common: Run-out
 ExhaustRun-out
Pronunciation🇬🇧 //ɪɡˈzɔːst//🇺🇸 //ɪɡˈzɔst//🇬🇧 //rʌn aʊt//🇺🇸 //rʌn aʊt//
MeaningThe state of being very tired or worn out.When something is used up completely.
ExampleAfter the marathon, I felt complete exhaust and could barely stand.I ran out of milk, so I can't make coffee.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 2,000 (common)
CEFR levelC1-
Part of speechnoun
Collocationsmental exhaust, total exhaust, extreme exhaustrun out of gas, run out of time, run out of options, run out of stock, run out of patience
Antonymsenergy, vitality, refreshment-
Common mistakesConfused with 'exhaustion', using it in non-physical contexts., Using it as a verb instead of a noun., Overusing in informal situations like casual conversation about being tired.Saying 'ran out of' when it should be 'run out of'., Using 'run out' without mentioning what is being run out., Confusing 'run out' with 'run away'.
Usage notesCommonly used in both formal and informal contexts. Not typically used when referring to casual tiredness; better for extreme fatigue.Use 'run out' when something is finished, like food or resources. It's appropriate in both formal and informal contexts.

Frequently asked questions: Exhaust vs Run-out

What's the difference between Exhaust and Run-out?

Exhaust: The state of being very tired or worn out. Run-out: When something is used up completely.

Which is more common: Exhaust and Run-out?

Run-out is the most common in everyday English.

Can you show an example of each?

Exhaust: After the marathon, I felt complete exhaust and could barely stand. Run-out: I ran out of milk, so I can't make coffee.

Can I use Exhaust and Run-out interchangeably?

Not always. Exhaust and Run-out are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.