Explanation vs Justification

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

Explanation

Top 2,000 (common)A2noun

Justification

FormalTop 5,000 (fairly common)C1noun
Most formal: JustificationMost common: Explanation
 ExplanationJustification
Pronunciation🇬🇧 /["/ˌekspləˈneɪʃn/"]/🇺🇸 /["/ˌekspləˈneɪʃn/"]/🇬🇧 /["/ˌdʒʌstɪfɪˈkeɪʃn/"]/🇺🇸 /["/ˌdʒʌstɪfɪˈkeɪʃn/"]/
MeaningA statement or description that makes something clear.A good reason for something.
ExampleThe teacher gave a clear explanation of the difficult concept.The lawyer provided a clear justification for her client's actions.
RegisterNeutralFormal
How commonTop 2,000 (common)Top 5,000 (fairly common)
CEFR levelA2C1
Part of speechnounnoun
Collocationsconvincing, credible, good, have, give (somebody), offer (somebody), lie, emerge, occur to somebody, in explanation, without explanation, explanation about, an attempt at explanation, by way of explanation, convincing, credible, good, have, give (somebody), offer (somebody), lie, emerge, occur to somebody, in explanation, without explanation, explanation about, an attempt at explanation, by way of explanationconsiderable, every, some, give (somebody), offer (somebody), provide (somebody with), in justification, with justification, without justification
Antonymsconfusion, mystificationreproach, blame, accusation
Common mistakes'Explanation' is often confused with 'explanation' versus 'explanatory'., Sometimes learners forget to use 'an' before 'explanation'., Using 'explain' instead of 'explanation' in noun forms.Confusing 'justification' with 'justification' as a verb., Using it in informal conversations., Mistaking it for 'justifying' in different grammatical structures.
Usage notesUse 'explanation' in neutral contexts. It’s suitable for formal writing, but can also be used in conversation. Avoid it in very casual or slang contexts.Used in formal contexts when explaining reasons for decisions or actions. Not appropriate for casual conversation.

Frequently asked questions: Explanation vs Justification

What's the difference between Explanation and Justification?

Explanation: A statement or description that makes something clear. Justification: A good reason for something.

Which is more formal: Explanation and Justification?

Justification is the most formal of these.

Which is more common: Explanation and Justification?

Explanation is the most common in everyday English.

Are Explanation and Justification the same CEFR level?

Explanation: A2, Justification: C1 on the CEFR scale.

Can I use Explanation and Justification interchangeably?

Not always. Explanation and Justification 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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