Fuse vs Merge

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

Fuse

Top 2,000 (common)

Merge

Top 1,000 (very common)C1verb
Most common: Merge
 FuseMerge
Pronunciation🇬🇧 //fjuːz//🇺🇸 //fjuːz//🇬🇧 /["/mɜːdʒ/","/ˈmɜːdʒɪz/","/mɜːdʒd/","/ˈmɜːdʒɪŋ/"]/🇺🇸 /["/mɜːrdʒ/","/ˈmɜːrdʒɪz/","/mɜːrdʒd/","/ˈmɜːrdʒɪŋ/"]/
MeaningTo join two things together; to mix.To combine two or more things into one.
ExampleThe artist chose to fuse different materials in her sculpture.The two companies decided to merge to increase their market share.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR level-C1
Part of speechverb
Collocationsfuse together, fuse into, fuse with, fuse circuit, fuse designmerge data, merge companies, merge cells, merge ideas, merge accounts
Antonymsseparate, disconnect, divergesplit, divide
Common mistakesConfusing with 'fused' as the past tense; remember it's a present form., Incorrectly using 'fuse' when referring to temporary mixtures; it's more permanent.Confusing with 'marge', which is not a valid word., Using 'merge' without an object; remember it needs something to merge., Omitting the 's' in present tense for third person (e.g., 'he merge' instead of 'he merges').
Usage notesUsed in both formal and informal contexts; often suggests a strong joining of elements, like in science or art.Use when talking about combining ideas, companies, or data. It's appropriate in both spoken and written contexts, such as business or technology.

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Fuse

Frequently asked questions: Fuse vs Merge

What's the difference between Fuse and Merge?

Fuse: To join two things together; to mix. Merge: To combine two or more things into one.

Which is more common: Fuse and Merge?

Merge is the most common in everyday English.

Can you show an example of each?

Fuse: The artist chose to fuse different materials in her sculpture. Merge: The two companies decided to merge to increase their market share.

Can I use Fuse and Merge interchangeably?

Not always. Fuse and Merge 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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