Conclusion vs Decision

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

Conclusion

Top 2,000 (common)B1noun

Decision

Top 1,000 (very common)A2noun
Most common: Decision
 ConclusionDecision
Pronunciation🇬🇧 /["/kənˈkluːʒn/"]/🇺🇸 /["/kənˈkluːʒn/"]/🇬🇧 /["/dɪˈsɪʒn/"]/🇺🇸 /["/dɪˈsɪʒn/"]/
MeaningThe final part of something where you finish your ideas.A choice made after thinking about options.
ExampleIn conclusion, we can see that the experiment was a success.Making a decision can be very difficult when there are many options.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB1A2
Part of speechnounnoun
Collocationscorrect, logical, reasonable, arrive at, come to, draw, satisfactory, satisfying, successful, bring about, bring something to, come to, in conclusion, satisfactory, satisfying, successful, bring about, bring something to, come to, in conclusionbig, crucial, fateful, arrive at, come to, make, process, time, decision about, decision on
Antonymsbeginning, start, introductionindecision, uncertainty
Common mistakesConfused with 'conclude' — they have different grammatical uses., Using 'conclusion' when 'summary' would be more accurate., Omitting 'the' before 'conclusion' in sentences.Saying 'make a choose' instead of 'make a decision'., Using 'decide' as a noun, e.g., 'the decide'., Confusing 'decision' with 'conclusion'.
Usage notesUsed to summarize thoughts or results. Appropriate in essays and conversations. Avoid using it in informal casual settings where a simpler term might be understood better.Use 'decision' in personal and professional contexts. It's suitable for formal discussions but can still be used informally. Avoid slang when making serious choices.

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Decision

Frequently asked questions: Conclusion vs Decision

What's the difference between Conclusion and Decision?

Conclusion: The final part of something where you finish your ideas. Decision: A choice made after thinking about options.

Which is more common: Conclusion and Decision?

Decision is the most common in everyday English.

Which is more advanced: Conclusion and Decision?

Conclusion is the highest level, at B1, on the CEFR scale.

Are Conclusion and Decision the same CEFR level?

Conclusion: B1, Decision: A2 on the CEFR scale.

What part of speech are Conclusion and Decision?

Conclusion: noun, Decision: noun.

Can you show an example of each?

Conclusion: In conclusion, we can see that the experiment was a success. Decision: Making a decision can be very difficult when there are many options.

Can I use Conclusion and Decision interchangeably?

Not always. Conclusion and Decision 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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