Intensity vs Severity

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

Intensity

Beyond 10,000 (less common)C1noun

Severity

Top 3,000 (common)B1noun
Most common: Severity
 IntensitySeverity
Pronunciation🇬🇧 /["/ɪnˈtensəti/"]/🇺🇸 /["/ɪnˈtensəti/"]/🇬🇧 //sɪˈvɛr.ɪ.ti//🇺🇸 //sɪˈvɛr.ɪ.ti//
MeaningThe strength or power of something.How serious or harsh something is.
ExampleThe intensity of the storm increased as it approached the coast.The severity of the storm caused widespread damage.
RegisterNeutralNeutral
How commonBeyond 10,000 (less common)Top 3,000 (common)
CEFR levelC1B1
Part of speechnounnoun
Collocationshigh, low, maximum, decrease, reduce, increase, in intensityseverity of the situation, severity index, severity scale, high severity, low severity
Antonymsweakness, softnessmildness, gentleness, leniency
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.Confusing 'severity' with 'seriousness'., Using 'severity' in plural form incorrectly, as it is usually uncountable., Mixing up the context where 'severity' should be used, like casual discussions.
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.Use 'severity' when discussing degrees of seriousness, such as in medical conditions or weather. It's appropriate in both formal and casual contexts but less common in everyday conversation.

Frequently asked questions: Intensity vs Severity

What's the difference between Intensity and Severity?

Intensity: The strength or power of something. Severity: How serious or harsh something is.

Which is more common: Intensity and Severity?

Severity is the most common in everyday English.

Which is more advanced: Intensity and Severity?

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

Are Intensity and Severity the same CEFR level?

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

What part of speech are Intensity and Severity?

Intensity: noun, Severity: noun.

Can you show an example of each?

Intensity: The intensity of the storm increased as it approached the coast. Severity: The severity of the storm caused widespread damage.

Can I use Intensity and Severity interchangeably?

Not always. Intensity and Severity 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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