Impact vs Influence

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

Impact

Top 1,000 (very common)B1noun

Influence

Top 1,000 (very common)B1noun
 ImpactInfluence
Pronunciation🇬🇧 /["/ˈɪmpækt/"]/🇺🇸 /["/ˈɪmpækt/"]/🇬🇧 /["/ˈɪnfluəns/"]/🇺🇸 /["/ˈɪnfluəns/"]/
MeaningThe strong effect or change that something has on something else.To have an effect on someone or something.
ExampleThe impact of the new policy was felt immediately across the company.Her influence on the committee was undeniable, as she often swayed their decisions.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelB1B1
Part of speechnounnoun
Collocationsbig, considerable, dramatic, achieve, create, exert, under the impact of, impact on, impact upon, full, initial, asteroid, take, feel, absorb, occur, knock somebody/​something…, speed, velocity, crater, on impact, the moment, point, time, etc. of impactbig, considerable, enormous, have, gain, give somebody, extend, grow, wane, under the influence, influence from, influence in, a sphere of influence, bring your influence to bear on somebody/​something, under the influence, big, considerable, enormous, have, gain, give somebody, extend, grow, wane, under the influence, influence from, influence in, a sphere of influence, bring your influence to bear on somebody/​something, under the influence, big, considerable, great, be, have, be exposed to, be at work, affect something, shape something, influence on
Antonymsinsignificance, ineffectivenessdisregard, ignore, neglect
Common mistakesConfused with 'effect' — remember that 'impact' often implies a stronger influence., Using 'impact' as a verb incorrectly, such as 'impacting on' instead of 'impacting'., Confusing the noun and verb forms — ensure the context matches the form used.Used as a noun instead of a verb without context., Confused with 'affect' versus 'effect'., Omitting the object when using it in sentences.
Usage notesUse 'impact' when describing the effect of one thing on another. It's suitable for both spoken and written contexts, but avoid using it in highly formal situations like academic papers. In casual conversation, synonyms like 'effect' might be more appropriate.Used in both formal and informal contexts to describe how one person or thing affects another. Be cautious not to confuse it with 'affect' which is more emotion-based.

Frequently asked questions: Impact vs Influence

What's the difference between Impact and Influence?

Impact: The strong effect or change that something has on something else. Influence: To have an effect on someone or something.

Are Impact and Influence the same CEFR level?

Impact: B1, Influence: B1 on the CEFR scale.

What part of speech are Impact and Influence?

Impact: noun, Influence: noun.

Can you show an example of each?

Impact: The impact of the new policy was felt immediately across the company. Influence: Her influence on the committee was undeniable, as she often swayed their decisions.

Can I use Impact and Influence interchangeably?

Not always. Impact and Influence 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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