Gas vs Vapor
When to use each in English, with meaning, register, and examples.
| Gas | Vapor | |
|---|---|---|
| Meaning | A substance that is neither solid nor liquid, such as air. | A gas or mist that comes from a liquid. |
| CEFR level | A2 | B1 |
| Part of speech | noun | noun |
| Usage notes | Used in everyday conversation to refer to fuel, but can also refer to air or vapor. In a scientific context, it can denote a state of matter. Avoid in very formal writing. | Use 'vapor' in scientific contexts or when discussing weather. Avoid informal settings. |
Frequently asked questions: Gas vs Vapor
What's the difference between "Gas" and "Vapor"?
"Gas" means: A substance that is neither solid nor liquid, such as air. "Vapor" means: A gas or mist that comes from a liquid.
When should I use "Gas" and "Vapor"?
They can all be used in everyday English.
Are "Gas" and "Vapor" the same CEFR level?
"Gas" is at A2, "Vapor" is at B1 on the CEFR scale.