Gases vs Gasses

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What’s the difference between them?



Gases are substances in a physical state in which the molecules (or atoms) are not bound together, but can move freely through space. Plural of 'gas.'


1. Gases like oxygen and nitrogen make up most of the atmosphere.

2. The container was tightly sealed so that none of the gases could escape.

3. I found myself feeling light-headed due to the gases in the room.



Gasses is a third-person singular form of the verb 'to gas.'


1. The factory gasses the atmosphere with dangerous substances.

2. The clown gasses the ballon.

Learn similar and opposite words to spot the difference






There are no direct antonyms for this word.


supply with gas



Tricks for mastery

Useful tips to understand the difference between confusing words "Gases", "Gasses".

1. Gases: Imagine a scientist explaining different gases in the atmosphere.

2. Gasses: Picture a mechanic who always gasses up cars before a test drive.

3. Create analogies that can help you remember the spelling. For example, 'Jake passes the exam and gasses to birthday of his mum.'

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Frequently asked questions

When to use the first word 'Gases'?

The word 'Gases' is used when referring to a group of substances that exist naturally in the atmosphere or that can be artificially produced for various uses. It is typically used in a scientific or technical context and is usually plural.

When to use the second word 'Gasses'?

The word 'Gasses' is used as a verb to indicate that someone pulls a pedal of a car, or lets the gas out.

Do the words have the same pronunciation?

Yes, the words 'Gases' and 'Gasses' have the same pronunciation, with the emphasis on the first syllable.

What are common mistakes associated with words?

One common mistake associated with the words 'Gases' and 'Gasses' is confusing the two. It's important to focus on the context to use the correct word.

Fill in the gaps to check yourself

1. The cars exhaust releases harmful ___ into the environment.

2. The machine automatically ___ the room with a pleasant scent every hour.

3. There are many different ___ present in our atmosphere.

4. In the old days, the town ___ its street lamps with coal gas.

5. Scientists study the effects of greenhouse ___ on global warming.

6. When the chemical reaction occurs, it ___ out a toxic fume.

1. gases

Explanation: The sentence refers to substances (specifically harmful ones) that are released into the environment by car exhaust. The plural noun form gases is appropriate.

2. gasses

Explanation: The sentence describes an action performed by the machine. It releases a scent, so it gasses the room. The verb form gasses (third-person singular of to gas) is correct.

3. gases

Explanation: The subject is discussing different substances present in the atmosphere, which means its referring to multiple entities in their gas state. Therefore, the plural noun gases is correct.

4. gassed

Explanation: The sentence is talking about an action the town performed in the past, implying a verb. The past tense verb gassed (from to gas) fits here.

5. gases

Explanation: This is a reference to the different substances that contribute to global warming. As it is talking about multiple entities in the gas state, the plural noun gases is suitable.

6. gasses

Explanation: This sentence speaks about a singular chemical reaction that releases (or gasses out) a fume. Hence, the verb form gasses is the correct choice.

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List of Commonly Confused Words

Finding your way around the English language can be hard, especially since there are so many confusing words and rules. So, a list of the most confusing words in English is an extremely useful tool for improving language accuracy and sharing the ideas clearly.