Which to use
“chau” is a verb and “chaux” is a noun - they look or sound alike but fill different roles in a sentence.
- #41,178
- “chau” frequency rank
- #12,530
- “chaux” frequency rank
- 53708
- confusion score
Side-by-Side Comparison
| Feature | chau | chaux |
|---|---|---|
| Definition | Froncer. | Oxyde de calcium, alcalin fort, obtenu par la décarbonatation à haute température, durant un temps long, de roches calcaires (→ voir chaux vive). |
Where the eye mixes chau and chaux
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. chau runs 4 letters (CCVV) against chaux's 5 (CCVVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between chau and chaux
These two trip readers on the page rather than in the ear: chau is \cau˦\ while chaux is \ʃo\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “chau” sits inside “chaux”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 53708, derived from the frequency rank of both members and their visual similarity.
chau is recorded at frequency rank #41,178, classified as averb, pronounced \cau˦\. chaux is at rank #12,530, tagged as anoun, pronounced \ʃo\.
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 53708, this pair ranks #138,936 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of chau vs chaux
Shared letters: achu. Private to "chau": -. Private to "chaux": x.
"chau" · 4 letters · shape CCVV · "chaux" · 5 letters · shape CCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "chau" for "chaux" ever safe?
Frequency check: "chau" vs "chaux" - which ranks higher?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "chau" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "chaux" - compare definitions side by side with the headword page. Word entry
- This pair ranks #138,936 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "chau" and "chaux" also get mixed up with nearby pairs, the highest-scored neighbour is "chah vs chau". 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 #138,936 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.