Achievement vs Realization

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

Achievement

Top 2,000 (common)B1noun

Realization

Top 2,000 (common)C1noun
 AchievementRealization
Pronunciation🇬🇧 /["/əˈtʃiːvmənt/"]/🇺🇸 /["/əˈtʃiːvmənt/"]/🇬🇧 /["/ˌriːəlaɪˈzeɪʃn//ˌrɪəlaɪˈzeɪʃn/"]/🇺🇸 /["/ˌriːələˈzeɪʃn/"]/
MeaningSomething you have done successfully.Understanding something clearly or becoming aware of it.
ExampleWinning the championship was a great achievement for the team.As realization dawned, he went pale.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB1C1
Part of speechnounnoun
Collocationsamazing, considerable, extraordinary, be, constitute, represent, achievement in, quite an achievement, high, individual, personal, level, standard, measure, gap, award, test, a feeling of achievement, a sense of achievement, a lack of achievementfull, dawning, growing, come to, come (to somebody), dawn (on somebody), hit somebody
Antonymsfailure, defeat, setbackignorance, unawareness
Common mistakesConfusing 'achievement' with 'accomplishment' when used in similar contexts., Using 'achievements' incorrectly as a verb instead of a noun., Not distinguishing between short-term and long-term achievements.Confused with 'realise' and 'realization' — remember 'realization' is a noun., Using 'realization' in formal writing where a simpler word like 'understanding' may be more appropriate., Mixing up with 'realistic' — they have different meanings.
Usage notesUse 'achievement' in both formal and informal settings. It's suitable for discussions about school, career, or personal goals, but may not fit casual conversations about everyday events.Use 'realization' when someone suddenly understands or discovers something important. It's neutral and suitable for both spoken and written contexts, but avoid it in casual slang conversations.

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Achievement

Frequently asked questions: Achievement vs Realization

What's the difference between Achievement and Realization?

Achievement: Something you have done successfully. Realization: Understanding something clearly or becoming aware of it.

Which is more advanced: Achievement and Realization?

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

Are Achievement and Realization the same CEFR level?

Achievement: B1, Realization: C1 on the CEFR scale.

What part of speech are Achievement and Realization?

Achievement: noun, Realization: noun.

Can you show an example of each?

Achievement: Winning the championship was a great achievement for the team. Realization: As realization dawned, he went pale.

Can I use Achievement and Realization interchangeably?

Not always. Achievement and Realization 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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