Accelerate vs Boost

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

Accelerate

Top 2,000 (common)C1verb

Boost

Top 1,000 (very common)B2verb
Most common: Boost
 AccelerateBoost
Pronunciation🇬🇧 /["/əkˈseləreɪt/","/əkˈseləreɪts/","/əkˈseləreɪtɪd/","/əkˈseləreɪtɪŋ/"]/🇺🇸 /["/əkˈseləreɪt/","/əkˈseləreɪts/","/əkˈseləreɪtɪd/","/əkˈseləreɪtɪŋ/"]/🇬🇧 /["/buːst/","/buːsts/","/ˈbuːstɪd/","/ˈbuːstɪŋ/"]/🇺🇸 /["/buːst/","/buːsts/","/ˈbuːstɪd/","/ˈbuːstɪŋ/"]/
MeaningTo go faster or make something go faster.to increase or improve something
ExampleThe company aims to accelerate the development of new technologies.to boost exports/profits
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelC1B2
Part of speechverbverb
Collocationsdramatically, greatly, rapidly, hard, quickly, smoothlyconsiderably, dramatically, greatly, help (to), to
Antonymsdecelerate, slow downdecrease, diminish, reduce
Common mistakesConfused with 'decelerate' (which means to slow down)., Using 'accelerate' without an object when it should have one., Incorrectly assuming it can only apply to vehicles.Confused with 'boast' – they have different meanings., Using 'boost' with uncountable nouns incorrectly., Confusing transitive use of 'boost' with intransitive.
Usage notesUsed in both formal and casual contexts, often related to speed, processes, or improvements. Not typically used in very informal conversation.Used in various contexts, such as improving performance or enhancing qualities. Avoid in highly formal contexts.

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Boost

Frequently asked questions: Accelerate vs Boost

What's the difference between Accelerate and Boost?

Accelerate: To go faster or make something go faster. Boost: to increase or improve something

Which is more common: Accelerate and Boost?

Boost is the most common in everyday English.

Which is more advanced: Accelerate and Boost?

Accelerate is the highest level, at C1, on the CEFR scale.

Are Accelerate and Boost the same CEFR level?

Accelerate: C1, Boost: B2 on the CEFR scale.

What part of speech are Accelerate and Boost?

Accelerate: verb, Boost: verb.

Can you show an example of each?

Accelerate: The company aims to accelerate the development of new technologies. Boost: to boost exports/profits

Can I use Accelerate and Boost interchangeably?

Not always. Accelerate and Boost 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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