Modify vs Shift

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

Modify

Top 2,000 (common)B2verb

Shift

Top 1,000 (very common)B1noun
Most common: Shift
 ModifyShift
Pronunciation🇬🇧 /["/ˈmɒdɪfaɪ/","/ˈmɒdɪfaɪz/","/ˈmɒdɪfaɪd/","/ˈmɒdɪfaɪɪŋ/"]/🇺🇸 /["/ˈmɑːdɪfaɪ/","/ˈmɑːdɪfaɪz/","/ˈmɑːdɪfaɪd/","/ˈmɑːdɪfaɪɪŋ/"]/🇬🇧 /["/ʃɪft/"]/🇺🇸 /["/ʃɪft/"]/
MeaningChange something to make it better or different.To move something from one place to another.
ExampleYou can modify the document by adding new sections.I need to shift my focus from social media to studying.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB2B1
Part of speechverbnoun
Collocationsconsiderably, drastically, extensively, have to, need to, for, highly modified, in a modified form, modified to fit somethingdouble, long, split, do, work, be on, begin, start, end, work, manager, supervisor, in shifts, on a/​the shift, distinct, dramatic, fundamental, be, mark, represent, occur, take place, shift between, shift (away) from, shift in
Antonymsmaintain, preserve, keepstay, remain, fix
Common mistakesConfusing with 'modification', which is the noun form., Using 'modify' without an object, which is incorrect., Overusing 'modify' instead of synonyms like 'change' or 'adjust' in casual speech.Confused with 'lift' — 'shift' means to move, not to pick up, Using 'shift' without an object — always needs something to be shifted, Incorrect preposition use — remember 'shift to' for changing focus
Usage notesUse 'modify' when discussing changes to plans, documents, or objects. It's neutral, so it's appropriate in most contexts, such as academic or business settings.Used in various contexts, such as moving objects, changing focus, or modifying plans. Less appropriate in strictly formal writings.

Frequently asked questions: Modify vs Shift

What's the difference between Modify and Shift?

Modify: Change something to make it better or different. Shift: To move something from one place to another.

Which is more common: Modify and Shift?

Shift is the most common in everyday English.

Are Modify and Shift the same CEFR level?

Modify: B2, Shift: B1 on the CEFR scale.

Can I use Modify and Shift interchangeably?

Not always. Modify and Shift 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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