Closure vs Completion vs Conclusion vs Resolution

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

Closure

Top 2,000 (common)C1noun

Completion

Top 2,000 (common)B2noun

Conclusion

Top 2,000 (common)B1noun

Resolution

Top 2,000 (common)B2noun
 ClosureCompletionConclusionResolution
Pronunciation🇬🇧 /["/ˈkləʊʒə(r)/"]/🇺🇸 /["/ˈkləʊʒər/"]/🇬🇧 /["/kəmˈpliːʃn/"]/🇺🇸 /["/kəmˈpliːʃn/"]/🇬🇧 /["/kənˈkluːʒn/"]/🇺🇸 /["/kənˈkluːʒn/"]/🇬🇧 /["/ˌrezəˈluːʃn/"]/🇺🇸 /["/ˌrezəˈluːʃn/"]/
MeaningThe end of something or feeling of being finished.The act of finishing something.The final part of something where you finish your ideas.A promise to do something better or to change a bad habit.
Examplefactory closuresThe completion of the project was celebrated with a party.In conclusion, we can see that the experiment was a success.Her New Year's resolution is to exercise every day.
RegisterNeutralNeutralNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)Top 2,000 (common)Top 2,000 (common)
CEFR levelC1B2B1B2
Part of speechnounnounnounnoun
Collocationscomplete, total, partial, be earmarked for, be threatened with, face, plan, programme/​program, order, under threat of closure, complete, total, partial, be earmarked for, be threatened with, face, plan, programme/​program, order, under threat of closure, final, narrative, be looking for, need, seek, a sense of closurerapid, speedy, early, near, reach, bring something to, date, time, rate, after completion, following completion, before completion, the date of completioncorrect, 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 conclusionfirm, good, New Year, make, keep, draft, formal, proposed, draft, introduce, issue, ask for something, be aimed at something, call for something, under (a/​the) resolution, resolution on, early, quick, rapid, need, require, press for, resolution of, resolution to, great, strong, have, show, lack, good, high, low
Antonymsconfusion, opennessincompletion, unfinished, failurebeginning, start, introductionindecision, vacillation, uncertainty
Common mistakesConfusing 'closure' with 'close'., Using 'closure' when referring to physical spaces rather than emotional states., Overusing 'closure' in contexts where 'conclusion' or 'resolution' would be clearer.Using 'complete' instead of 'completion' as a noun, Confusing it with 'completionist' in game contexts, Saying 'the completion of the work is done' instead of 'the completion of the work is finished'Confused with 'conclude' — they have different grammatical uses., Using 'conclusion' when 'summary' would be more accurate., Omitting 'the' before 'conclusion' in sentences.Confused with 'solution'; resolutions are about goals, not answers., Using 'resolution' without a specified goal (e.g., 'My resolution is to exercise' should specify how often)., Omitting the 'to' before the verb (e.g., 'My resolution is exercise' instead of 'My resolution is to exercise').
Usage notesUsed in both personal and professional contexts. In therapy, it refers to coming to terms with a past situation. In business, it might mean the conclusion of a project.Use 'completion' in contexts where something is finished. Common in academic or formal settings, but less so in casual conversation. Be careful in using it in informal settings where simpler words may work better.Used 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.Used commonly in the context of new year's resolutions or goals. More formal in written contexts, less so in casual conversations.

Frequently asked questions: Closure vs Completion vs Conclusion vs Resolution

What's the difference between Closure, Completion, Conclusion, and Resolution?

Closure: The end of something or feeling of being finished. Completion: The act of finishing something. Conclusion: The final part of something where you finish your ideas. Resolution: A promise to do something better or to change a bad habit.

Which is more advanced: Closure, Completion, Conclusion, and Resolution?

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

Are Closure, Completion, Conclusion, and Resolution the same CEFR level?

Closure: C1, Completion: B2, Conclusion: B1, Resolution: B2 on the CEFR scale.

What part of speech are Closure, Completion, Conclusion, and Resolution?

Closure: noun, Completion: noun, Conclusion: noun, Resolution: noun.

Can you show an example of each?

Closure: factory closures Completion: The completion of the project was celebrated with a party. Conclusion: In conclusion, we can see that the experiment was a success. Resolution: Her New Year's resolution is to exercise every day.

Can I use Closure, Completion, Conclusion, and Resolution interchangeably?

Not always. Closure, Completion, Conclusion, and Resolution 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.