Fume vs Vapor

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

Fume

Top 3,000 (common)

Vapor

Top 2,000 (common)B1noun
Most common: Vapor
 FumeVapor
Pronunciation🇬🇧 //fjuːm//🇺🇸 //fjuːm//🇬🇧 //ˈveɪpə//🇺🇸 //ˈveɪpər//
MeaningTo be very angry, or to produce smoke.A gas or mist that comes from a liquid.
ExampleShe began to fume when she realized her mistake.The vapor from the boiling pot filled the kitchen.
RegisterNeutralNeutral
How commonTop 3,000 (common)Top 2,000 (common)
CEFR level-B1
Part of speechnoun
Collocationsfume in anger, fume with rage, fume over mistakeswater vapor, vapor pressure, vapor trail, vaporization process
Antonymscalm, simmer down, reassuresolid, liquid
Common mistakesConfusing with 'fuming' - the verb forms are distinct., Using 'fume' in passive voice incorrectly - it's typically active., Mixing 'fume' with unrelated animals or feelings.Confusing with 'steam' which is specifically from boiling water., Using 'vapor' for solid substances instead of gases.
Usage notesOften used informally to describe someone who is visibly angry. Avoid in formal writing unless describing smoke or exhaust.Use 'vapor' in scientific contexts or when discussing weather. Avoid informal settings.

See it in real clips

Fume

Frequently asked questions: Fume vs Vapor

What's the difference between Fume and Vapor?

Fume: To be very angry, or to produce smoke. Vapor: A gas or mist that comes from a liquid.

Which is more common: Fume and Vapor?

Vapor is the most common in everyday English.

Can you show an example of each?

Fume: She began to fume when she realized her mistake. Vapor: The vapor from the boiling pot filled the kitchen.

Can I use Fume and Vapor interchangeably?

Not always. Fume and Vapor 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.

Related comparisons