Container vs Tank

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

Container

Top 2,000 (common)B1noun

Tank

Top 2,000 (common)B2noun
 ContainerTank
Pronunciation🇬🇧 /["/kənˈteɪnə(r)/"]/🇺🇸 /["/kənˈteɪnər/"]/🇬🇧 /["/tæŋk/","/ˈtæŋkfʊl/"]/🇺🇸 /["/tæŋk/","/ˈtæŋkfʊl/"]/
MeaningA box or other object used to hold things.A large container for holding liquids or a military vehicle.
ExampleThe package arrived in a large container that was difficult to open.a **fuel/water/storage tank**
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB1B2
Part of speechnounnoun
Collocationsairtight, closed, sealed, fill, store something in, contain something, hold something, garden, plant, in a/​the container, container for, container of, empty, full, bulk, contain something, hold something, lorry, ship, portempty, 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, corps
Antonymssource, origin, emptinessdrain, empty
Common mistakes'Container' is sometimes confused with 'content' - remember, 'container' holds things, 'content' is what is inside., Some learners use 'conteneer' instead of 'container' due to phonetic similarities., It's often mistakenly pluralized as 'containerss'.Confused with 'tank' as a verb (e.g., to fail badly)., Misunderstanding 'tank' as only a military term; it's also for containers.
Usage notesUsed in everyday contexts, 'container' fits well in both casual and professional speech. It may not be suitable for very formal writing where more specific terms like 'receptacle' might be preferred.Used 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.

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Container
Tank

Frequently asked questions: Container vs Tank

What's the difference between Container and Tank?

Container: A box or other object used to hold things. Tank: A large container for holding liquids or a military vehicle.

Which is more advanced: Container and Tank?

Tank is the highest level, at B2, on the CEFR scale.

Are Container and Tank the same CEFR level?

Container: B1, Tank: B2 on the CEFR scale.

What part of speech are Container and Tank?

Container: noun, Tank: noun.

Can you show an example of each?

Container: The package arrived in a large container that was difficult to open. Tank: a **fuel/water/storage tank**

Can I use Container and Tank interchangeably?

Not always. Container and Tank 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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