Certainty vs Confidence

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

Certainty

Top 1,000 (very common)B2noun

Confidence

Top 1,000 (very common)B2noun
 CertaintyConfidence
Pronunciation🇬🇧 /["/ˈsɜːtnti/"]/🇺🇸 /["/ˈsɜːrtnti/"]/🇬🇧 /["/ˈkɒnfɪdəns/"]/🇺🇸 /["/ˈkɑːnfɪdəns/"]/
MeaningBeing sure about something.Believing in yourself and your abilities.
ExampleThere is no certainty that the president's removal would end the civil war.Her confidence in her abilities helped her succeed in the competition.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelB2B2
Part of speechnounnoun
Collocationsabsolute, complete, near, degree, with certainty, a lack of certainty, the one certainty, the only certainty, absolute, complete, near, degree, with certainty, a lack of certainty, the one certainty, the only certaintyabsolute, complete, full, enjoy, feel, have, decline, decrease, fall, confidence about, confidence among, confidence between, a crisis of confidence, have every confidence, have the utmost confidence, considerable, enormous, great, have, demonstrate, display, drain, drain away, evaporate, boost, booster, builder, with confidence, confidence about, confidence in, a lack of confidence, a loss of confidence, absolute, complete, full, enjoy, have, keep, game, trick, man, in confidence, a breach of confidence, in strict confidence, whispered, exchange, share, keep
Antonymsdoubt, uncertaintyinsecurity, doubt, fear
Common mistakesConfused with 'certainty' vs 'certainly', Using 'certainty' with a verb instead of as a noun, Believing it can be used in place of 'sure' in informal contextsConfusing 'confidence' with 'confident' (adjective) in use., Using 'confidence' in situations requiring a synonym, like 'trust' or 'faith', but meaning differently., Mispronouncing it as 'con-fid-ence' instead of 'con-fi-dence'.
Usage notesUsed in both written and spoken contexts. More formal than 'sure'. Appropriate in academic or serious discussions, but can also be used casually to emphasize confidence.Use 'confidence' in both casual and formal contexts. It's appropriate when discussing self-belief, particularly in academic or professional settings.

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Certainty
Confidence

Frequently asked questions: Certainty vs Confidence

What's the difference between Certainty and Confidence?

Certainty: Being sure about something. Confidence: Believing in yourself and your abilities.

Are Certainty and Confidence the same CEFR level?

Certainty: B2, Confidence: B2 on the CEFR scale.

What part of speech are Certainty and Confidence?

Certainty: noun, Confidence: noun.

Can you show an example of each?

Certainty: There is no certainty that the president's removal would end the civil war. Confidence: Her confidence in her abilities helped her succeed in the competition.

Can I use Certainty and Confidence interchangeably?

Not always. Certainty and Confidence 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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