Which to use
“fion” and “fusion” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #27,064
- “fion” frequency rank
- #3,538
- “fusion” frequency rank
- 30602
- confusion score
Side-by-Side Comparison
| Feature | fion | fusion |
|---|---|---|
| Definition | Coup, attaque physique ^([2]). | Liquéfaction d’un corps par l’action de la chaleur. |
Where the eye mixes fion and fusion
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. fion runs 4 letters (CVVC) against fusion's 6 (CVCVVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between fion and fusion
A purely visual mix-up. fion (\fjɔ̃\) and fusion (\fy.zjɔ̃\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 letter(s) in length. Our composite confusion score for this pair is 30602, derived from the frequency rank of both members and their visual similarity.
fion is recorded at frequency rank #27,064, classified as anoun, pronounced \fjɔ̃\. fusion is at rank #3,538, tagged as anoun, pronounced \fy.zjɔ̃\.
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 30602, this pair ranks #309,188 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of fion vs fusion
Shared letters: fino. Private to "fion": -. Private to "fusion": su.
"fion" · 4 letters · shape CVVC · "fusion" · 6 letters · shape CVCVVC
Known mistypes of this pair
Frequently Asked Questions
Do "fion" and "fusion" mean the same thing in a sentence?
In ordinary French text, does "fion" or "fusion" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "fion" 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 #309,188 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "fion" and "fusion" also get mixed up with nearby pairs, the highest-scored neighbour is "fion vs FIV". 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 #309,188 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.