Tank vs Vat

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

Tank

Top 2,000 (common)B2noun

Vat

Beyond 10,000 (less common)
Most common: Tank
 TankVat
Pronunciation🇬🇧 /["/tæŋk/","/ˈtæŋkfʊl/"]/🇺🇸 /["/tæŋk/","/ˈtæŋkfʊl/"]/🇬🇧 //væt//🇺🇸 //væt//
MeaningA large container for holding liquids or a military vehicle.A large container for holding liquids.
Examplea **fuel/water/storage tank**The factory uses a vat to store chemicals safely.
RegisterNeutralNeutral
How commonTop 2,000 (common)Beyond 10,000 (less common)
CEFR levelB2-
Part of speechnoun
Collocationsempty, full, glass, fill, refill, drain, contain something, in a/​the tank, into a/​the tank, tank of, empty, full, glass, fill, refill, drain, contain something, in a/​the tank, into a/​the tank, tank of, armoured/​armored, army, battle, climb into, get into, drive, roll, advance, attack, battalion, company, corpsfill a vat, large vat, industrial vat, mix in a vat, empty the vat
Antonymsdrain, empty-
Common mistakesConfused with 'tank' as a verb (e.g., to fail badly)., Misunderstanding 'tank' as only a military term; it's also for containers.Confused with 'pot' - a vat is much larger., Mispronounced as 'vat' instead of with a long 'a' sound., Used in the wrong context - a vat is not a common household item.
Usage notesUsed commonly in both military and everyday contexts. In military terms, it's for armored vehicles; in common use, it refers to containers for water or gas. Not typically used in formal writing.Commonly used in industrial or commercial contexts, not typically used for small-scale cooking or home use.

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Vat

Frequently asked questions: Tank vs Vat

What's the difference between Tank and Vat?

Tank: A large container for holding liquids or a military vehicle. Vat: A large container for holding liquids.

Which is more common: Tank and Vat?

Tank is the most common in everyday English.

Can you show an example of each?

Tank: a **fuel/water/storage tank** Vat: The factory uses a vat to store chemicals safely.

Can I use Tank and Vat interchangeably?

Not always. Tank and Vat 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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