Which to use
“faction” and “fonction” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #14,475
- “faction” frequency rank
- #724
- “fonction” frequency rank
- 15199
- confusion score
Side-by-Side Comparison
| Feature | faction | fonction |
|---|---|---|
| Definition | Action ou tâche quelconque qu'un soldat est en charge de faire. | Activité qui tend à un but déterminé. |
Where the eye mixes faction and fonction
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. faction runs 7 letters (CVCCVVC) against fonction's 8 (CVCCCVVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses faction with fonction
A purely visual mix-up. faction (\fak.sjɔ̃\) and fonction (\fɔ̃k.sjɔ̃\) 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 1 letter(s) in length. Our composite confusion score for this pair is 15199, derived from the frequency rank of both members and their visual similarity.
faction is recorded at frequency rank #14,475, classified as anoun, pronounced \fak.sjɔ̃\. fonction is at rank #724, tagged as anoun, pronounced \fɔ̃k.sjɔ̃\.
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 15199, this pair ranks #393,415 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of faction vs fonction
Shared letters: cfinot. Private to "faction": a. Private to "fonction": -.
"faction" · 7 letters · shape CVCCVVC · "fonction" · 8 letters · shape CVCCCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "faction" for "fonction" ever safe?
Which is more common, "faction" or "fonction"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "faction" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fonction" - compare definitions side by side with the headword page. Word entry
- This pair ranks #393,415 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "faction" and "fonction" also get mixed up with nearby pairs, the highest-scored neighbour is "faction vs function". 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 #393,415 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.