Which to use
“fusing” is a verb and “fusion” is a noun - they look or sound alike but fill different roles in a sentence.
- #32,405
- “fusing” frequency rank
- #6,911
- “fusion” frequency rank
- 39316
- confusion score
Side-by-Side Comparison
| Feature | fusing | fusion |
|---|---|---|
| Definition | present participle and gerund of fuse | The act of merging separate things, or the result thereof. |
Where the eye mixes fusing and fusion
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Look-alike desk: fusing vs fusion
These two trip readers on the page rather than in the ear: fusing is /ˈfjuːzɪŋ/ while fusion is /ˈfjuː.ʒən/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 39316, derived from the frequency rank of both members and their visual similarity.
fusing is recorded at frequency rank #32,405, classified as averb, pronounced /ˈfjuːzɪŋ/. fusion is at rank #6,911, tagged as anoun, pronounced /ˈfjuː.ʒən/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 39316, this pair ranks #277,823 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of fusing vs fusion
Shared letters: finsu. Private to "fusing": g. Private to "fusion": o.
"fusing" · 6 letters · shape CVCVCC · "fusion" · 6 letters · shape CVCVVC
Known mistypes of this pair
Frequently Asked Questions
Can "fusing" and "fusion" be used interchangeably?
Which is more common, "fusing" or "fusion"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "fusing" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fusion" - compare definitions side by side with the headword page. Word entry
- This pair ranks #277,823 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "fusing" and "fusion" also get mixed up with nearby pairs, the highest-scored neighbour is "fisting vs fusing". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #277,823 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.