Fog vs Haze

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

Fog

Top 1,000 (very common)

Haze

Top 2,000 (common)
Most common: Fog
 FogHaze
Pronunciation🇬🇧 //fɒg//🇺🇸 //fɔg//🇬🇧 //heɪz//🇺🇸 //heɪz//
MeaningA thick cloud of tiny water drops in the air that makes things hard to see.A thick mist in the air that makes it hard to see.
ExampleThe fog rolled in quickly, making the road almost invisible.The view was limited due to the morning haze over the hills.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
Collocationsheavy fog, thick fog, foggy weather, dense fog, coastal fogthick haze, air quality and haze, haze of smoke, haze at sunrise, haze causing visibility issues
Common mistakesConfused with 'smog', which is polluted fog, Using 'fog' for a light mist instead of a thick cloud, Incorrectly pluralizing 'fog' as 'fogs'Confusing 'haze' with 'fog' - haze is less dense., Using 'haze' inappropriately to refer to emotional states., Mixing it up with 'hazy' when describing something unclear.
Usage notesUse 'fog' in both literal and metaphorical senses. In formal writing, avoid using 'fog' figuratively unless context allows.Use 'haze' when describing poor visibility due to moisture or pollution. It's not typically used in formal writing.

Frequently asked questions: Fog vs Haze

What's the difference between Fog and Haze?

Fog: A thick cloud of tiny water drops in the air that makes things hard to see. Haze: A thick mist in the air that makes it hard to see.

Which is more common: Fog and Haze?

Fog is the most common in everyday English.

Can you show an example of each?

Fog: The fog rolled in quickly, making the road almost invisible. Haze: The view was limited due to the morning haze over the hills.

Can I use Fog and Haze interchangeably?

Not always. Fog and Haze 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.

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