Cloud vs Fog
When to use each in English, with meaning, register, and examples.
Cloud
High-frequency chunkA2noun
Fog
Top 1,000 (very common)
| Cloud | Fog | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/klaʊd/"]/🇺🇸 /["/klaʊd/"]/ | 🇬🇧 //fɒg//🇺🇸 //fɔg// |
| Meaning | A white or gray mass in the sky made of water or ice. | A thick cloud of tiny water drops in the air that makes things hard to see. |
| Example | The sky is filled with a fluffy white cloud. | The fog rolled in quickly, making the road almost invisible. |
| Register | Neutral | Neutral |
| How common | High-frequency chunk | Top 1,000 (very common) |
| CEFR level | A2 | - |
| Part of speech | noun | |
| Collocations | dense, heavy, thick, band, bank, blanket, seed, form, gather, mass, bank, cover, layer, above the clouds, below the clouds, through the clouds, a break in the cloud, a break in the clouds, great, huge, dense, create, form, belch, cloud of | heavy fog, thick fog, foggy weather, dense fog, coastal fog |
| Antonyms | sun, clear sky, brightness | - |
| Common mistakes | Confused with 'cloudy' as an adjective when describing the weather., Mispronounced as 'clowd'., Using 'cloud' as a verb incorrectly. | Confused with 'smog', which is polluted fog, Using 'fog' for a light mist instead of a thick cloud, Incorrectly pluralizing 'fog' as 'fogs' |
| Usage notes | Used to describe the visible form of condensed water vapor in the atmosphere. Appropriate in both casual and formal contexts. Avoid using it metaphorically when talking about emotions unless discussing weather. | Use 'fog' in both literal and metaphorical senses. In formal writing, avoid using 'fog' figuratively unless context allows. |
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Frequently asked questions: Cloud vs Fog
What's the difference between Cloud and Fog?
Cloud: A white or gray mass in the sky made of water or ice. Fog: A thick cloud of tiny water drops in the air that makes things hard to see.
Can you show an example of each?
Cloud: The sky is filled with a fluffy white cloud. Fog: The fog rolled in quickly, making the road almost invisible.
Can I use Cloud and Fog interchangeably?
Not always. Cloud and Fog 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.