Application vs Implementation

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

Application

Top 1,000 (very common)B1noun

Implementation

FormalTop 2,000 (common)C1noun
Most formal: ImplementationMost common: Application
 ApplicationImplementation
Pronunciation🇬🇧 /["/ˌæplɪˈkeɪʃn/"]/🇺🇸 /["/ˌæplɪˈkeɪʃn/"]/🇬🇧 /["/ˌɪmplɪmenˈteɪʃn/"]/🇺🇸 /["/ˌɪmplɪmenˈteɪʃn/"]/
MeaningA formal request or a program for a computer.The act of putting a plan into action or making it happen.
ExampleI submitted my application to the university last week.the implementation of the new system
RegisterNeutralFormal
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB1C1
Part of speechnounnoun
Collocationsformal, written, successful, file, lodge, make, form, guidelines, deadline, by application, on application, application for, practical, real-world, generalimplementation plan, implementation process, successful implementation, implementation strategy, implementation team
Antonymsrejection, withdrawalabandonment, neglect, failure
Common mistakesConfused with 'apply' - don't use them interchangeably., Using 'application' in the wrong context, like for informal requests., Saying 'applicant' when you mean 'application'.Confusing 'implementation' with 'implication'., Using 'implement' instead of 'implementation' as a noun., Omitting 'of' when saying 'implementation' (e.g., saying 'implementation project' instead of 'implementation of the project').
Usage notesUse 'application' when referring to a formal request for jobs, schools, or grants. Avoid in very casual conversations unless talking about apps.Used in professional or technical contexts when discussing the process of executing plans, policies, or systems. It's less common in casual conversation.

Frequently asked questions: Application vs Implementation

What's the difference between Application and Implementation?

Application: A formal request or a program for a computer. Implementation: The act of putting a plan into action or making it happen.

Which is more formal: Application and Implementation?

Implementation is the most formal of these.

Which is more common: Application and Implementation?

Application is the most common in everyday English.

Are Application and Implementation the same CEFR level?

Application: B1, Implementation: C1 on the CEFR scale.

Can I use Application and Implementation interchangeably?

Not always. Application and Implementation 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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