Which to use
“CM1” and “CSR” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #26,672
- “CM1” frequency rank
- #45,537
- “CSR” frequency rank
- 72209
- confusion score
Side-by-Side Comparison
| Feature | CM1 | CSR |
|---|---|---|
| Definition | Quatrième classe de l’école élémentaire et première classe du cycle de consolidation. | Demande de signature de certificat : message envoyé à partir d'un demandeur à une autorité de certification afin de demander un certificat d'identité numérique. |
Where the eye mixes CM1 and CSR
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. CM1 runs 2 letters (CC) against CSR's 3 (CCC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses CM1 with CSR
A purely visual mix-up. CM1 (\se.ɛ.m‿œ̃\) and CSR (\se.ɛs.ɛʁ\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 72209, derived from the frequency rank of both members and their visual similarity.
CM1 is recorded at frequency rank #26,672, classified as anoun, pronounced \se.ɛ.m‿œ̃\. CSR is at rank #45,537, tagged as anoun, pronounced \se.ɛs.ɛʁ\.
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 72209, this pair ranks #44,810 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of CM1 vs CSR
Shared letters: c. Private to "CM1": m. Private to "CSR": rs.
"CM1" · 2 letters · shape CC · "CSR" · 3 letters · shape CCC
Frequently Asked Questions
Do "CM1" and "CSR" mean the same thing in a sentence?
Frequency check: "CM1" vs "CSR" - which ranks higher?
After this comparison
Eye-level mix-up between "CM1" and "CSR" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "CM1" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "CSR" - compare definitions side by side with the headword page. Word entry
- This pair ranks #44,810 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "CM1" and "CSR" also get mixed up with nearby pairs, the highest-scored neighbour is "ciro vs CSR". Nearby pair
Confusion rank #44,810 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.