Fog vs Mist

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

Fog

Top 1,000 (very common)

Mist

Top 2,000 (common)
Most common: Fog
 FogMist
Pronunciation🇬🇧 //fɒg//🇺🇸 //fɔg//🇬🇧 //mɪst//🇺🇸 //mɪst//
MeaningA thick cloud of tiny water drops in the air that makes things hard to see.A thick cloud of tiny water drops in the air.
ExampleThe fog rolled in quickly, making the road almost invisible.The mist rolled in from the sea, creating an eerie atmosphere.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
Collocationsheavy fog, thick fog, foggy weather, dense fog, coastal fogmorning mist, thick mist, heavy mist, gentle mist, coastal mist
Common mistakesConfused with 'smog', which is polluted fog, Using 'fog' for a light mist instead of a thick cloud, Incorrectly pluralizing 'fog' as 'fogs'Confused with 'fog', which is denser., Using 'mist' when 'steam' is more appropriate., Saying 'the misty' instead of 'mist'.
Usage notesUse 'fog' in both literal and metaphorical senses. In formal writing, avoid using 'fog' figuratively unless context allows.Used in both formal and informal contexts; appropriate for describing weather conditions. Avoid using in overly technical or scientific discussions.

Frequently asked questions: Fog vs Mist

What's the difference between Fog and Mist?

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

Which is more common: Fog and Mist?

Fog is the most common in everyday English.

Can I use Fog and Mist interchangeably?

Not always. Fog and Mist 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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