Intensity vs Vigor

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

Intensity

Beyond 10,000 (less common)C1noun

Vigor

Top 5,000 (fairly common)B1noun
Most common: Vigor
 IntensityVigor
Pronunciation🇬🇧 /["/ɪnˈtensəti/"]/🇺🇸 /["/ɪnˈtensəti/"]/🇬🇧 //ˈvɪɡə//🇺🇸 //ˈvɪɡər//
MeaningThe strength or power of something.Great energy and strength.
ExampleThe intensity of the storm increased as it approached the coast.She approached her work with great vigor.
RegisterNeutralNeutral
How commonBeyond 10,000 (less common)Top 5,000 (fairly common)
CEFR levelC1B1
Part of speechnounnoun
Collocationshigh, low, maximum, decrease, reduce, increase, in intensityspeak with vigor, live with vigor, approach with vigor
Antonymsweakness, softnessfatigue, weakness
Common mistakesConfusing with 'intense', which is an adjective., Using 'intensity' in singular form when referring to multiple instances mistakenly., Incorrectly applying it to describe non-physical attributes, like personality directly.Confused with 'vigorously', which is an adverb., Incorrectly used as a verb., Omitting its use in a positive context.
Usage notesUse 'intensity' when discussing the strength of emotions, colors, or physical activity. It is neutral and fits well in academic or everyday conversations but may not be appropriate in very casual contexts.Used to describe physical or mental energy, often in a positive context. Avoid in overly formal writing.

Frequently asked questions: Intensity vs Vigor

What's the difference between Intensity and Vigor?

Intensity: The strength or power of something. Vigor: Great energy and strength.

Which is more common: Intensity and Vigor?

Vigor is the most common in everyday English.

Which is more advanced: Intensity and Vigor?

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

Are Intensity and Vigor the same CEFR level?

Intensity: C1, Vigor: B1 on the CEFR scale.

What part of speech are Intensity and Vigor?

Intensity: noun, Vigor: noun.

Can you show an example of each?

Intensity: The intensity of the storm increased as it approached the coast. Vigor: She approached her work with great vigor.

Can I use Intensity and Vigor interchangeably?

Not always. Intensity and Vigor 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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