Which to use
“rouage” and “roulage” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #39,518
- “rouage” frequency rank
- #35,700
- “roulage” frequency rank
- 75218
- confusion score
Side-by-Side Comparison
| Feature | rouage | roulage |
|---|---|---|
| Definition | Élément de roue. | Transport des marchandises par voiture. |
Where the eye mixes rouage and roulage
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. rouage runs 6 letters (CVVVCV) against roulage's 7 (CVVCVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses rouage with roulage
A purely visual mix-up. rouage (\ʁwaʒ\) and roulage (\ʁu.laʒ\) 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 75218, derived from the frequency rank of both members and their visual similarity.
rouage is recorded at frequency rank #39,518, classified as anoun, pronounced \ʁwaʒ\. roulage is at rank #35,700, tagged as anoun, pronounced \ʁu.laʒ\.
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 75218, this pair ranks #34,740 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of rouage vs roulage
Shared letters: aegoru. Private to "rouage": -. Private to "roulage": l.
"rouage" · 6 letters · shape CVVVCV · "roulage" · 7 letters · shape CVVCVCV
Known mistypes of this pair
Frequently Asked Questions
Do "rouage" and "roulage" mean the same thing in a sentence?
In ordinary French text, does "rouage" or "roulage" show up more?
After this comparison
Eye-level mix-up between "rouage" and "roulage" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "rouage" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "roulage" - compare definitions side by side with the headword page. Word entry
- This pair ranks #34,740 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "rouage" and "roulage" also get mixed up with nearby pairs, the highest-scored neighbour is "rouage vs rouble". 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 #34,740 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.