Which to use
“chah” is a noun and “cpa” is a particle - they look or sound alike but fill different roles in a sentence.
- #47,782
- “chah” frequency rank
- #38,736
- “cpa” frequency rank
- 86518
- confusion score
Side-by-Side Comparison
| Feature | chah | cpa |
|---|---|---|
| Definition | Titre des monarques de Perse, puis de l’Iran. | Neuf. |
Where the eye mixes chah and cpa
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. chah runs 4 letters (CCVC) against cpa's 3 (CCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses chah with cpa
These two trip readers on the page rather than in the ear: chah is \ʃa\ while cpa is \tspa\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs particle), which is usually the fastest check. Our composite confusion score for this pair is 86518, derived from the frequency rank of both members and their visual similarity.
chah is recorded at frequency rank #47,782, classified as anoun, pronounced \ʃa\. cpa is at rank #38,736, tagged as aparticle, pronounced \tspa\.
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 86518, this pair ranks #9,595 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of chah vs cpa
Shared letters: ac. Private to "chah": h. Private to "cpa": p.
"chah" · 4 letters · shape CCVC · "cpa" · 3 letters · shape CCV
Known mistypes of this pair
- chah ← cahh · cchah · chahh · chha · chhah · hcah
Frequently Asked Questions
Is swapping "chah" for "cpa" ever safe?
Frequency check: "chah" vs "cpa" - which ranks higher?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "chah" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cpa" - compare definitions side by side with the headword page. Word entry
- This pair ranks #9,595 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "chah" and "cpa" also get mixed up with nearby pairs, the highest-scored neighbour is "CCAS vs chah". 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 #9,595 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.