Incidence vs Rate

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

Incidence

Top 3,000 (common)C1noun

Rate

Top 1,000 (very common)A2noun
Most common: Rate
 IncidenceRate
Pronunciation🇬🇧 /["/ˈɪnsɪdəns/"]/🇺🇸 /["/ˈɪnsɪdəns/"]/🇬🇧 /["/reɪt/"]/🇺🇸 /["/reɪt/"]/
MeaningThe occurrence of something, especially something bad.How much something is valued or measured.
Examplean area with a **high incidence** of crimeThe teacher gave each student a rate based on their performance in class.
RegisterNeutralNeutral
How commonTop 3,000 (common)Top 1,000 (very common)
CEFR levelC1A2
Part of speechnounnoun
Collocationsgreat, high, peak, have, show, increase, increase, decrease, fall, rate, incidence among, incidence in, a decrease in the incidence of something, an increase in the incidence of something, a variation in the incidence of somethingconstant, expected, regular, accelerate, improve, increase, be up, go up, shoot up, at a/​the rate, rate of, rate per, constant, expected, regular, accelerate, improve, increase, be up, go up, shoot up, at a/​the rate, rate of, rate per, cheap, competitive, low, determine, fix, peg, climb, go up, increase, at a/​the rate, rate for, rate of, a drop in rates, a rise in rates, a rate of return, cheap, competitive, low, determine, fix, peg, climb, go up, increase, at a/​the rate, rate for, rate of, a drop in rates, a rise in rates, a rate of return
Antonymsnonoccurrence, absencedisrate, devalue
Common mistakesConfused with 'incident', which refers to a specific event., Used inappropriately in informal contexts., Incorrect pluralization, saying 'incidences' instead of 'incidents' when referring to events.Confused with 'rate' vs 'rate of' - 'rate of' implies a measurement over time., Using 'rated' when 'rate' is required - 'I rate this movie' not 'I rated this movie for now.', Mixing up with 'ratio' - 'rate' refers to the value assessment.
Usage notesCommonly used in scientific, medical, and statistical contexts. Avoid casual conversations, as it may sound overly technical. Appropriate when discussing rates or frequencies of events.Used in both formal and informal contexts. Appropriate for discussing evaluations, scores, and comparisons. Avoid using it in contexts that require more emotional nuance.

Frequently asked questions: Incidence vs Rate

What's the difference between Incidence and Rate?

Incidence: The occurrence of something, especially something bad. Rate: How much something is valued or measured.

Which is more common: Incidence and Rate?

Rate is the most common in everyday English.

Which is more advanced: Incidence and Rate?

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

Are Incidence and Rate the same CEFR level?

Incidence: C1, Rate: A2 on the CEFR scale.

What part of speech are Incidence and Rate?

Incidence: noun, Rate: noun.

Can you show an example of each?

Incidence: an area with a **high incidence** of crime Rate: The teacher gave each student a rate based on their performance in class.

Can I use Incidence and Rate interchangeably?

Not always. Incidence and Rate 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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