Which to use
“CSM” and “CTC” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #39,735
- “CSM” frequency rank
- #44,964
- “CTC” frequency rank
- 84699
- confusion score
Side-by-Side Comparison
| Feature | CSM | CTC |
|---|---|---|
| Definition | Centre de commutation du service des mobiles. | Cellule tumorale circulante. |
Where the eye mixes CSM and CTC
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: CSM vs CTC
A purely visual mix-up. CSM (\se.es.em\) and CTC (\se.te.se\) 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 84699, derived from the frequency rank of both members and their visual similarity.
CSM is recorded at frequency rank #39,735, classified as anoun, pronounced \se.es.em\. CTC is at rank #44,964, tagged as anoun, pronounced \se.te.se\.
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 84699, this pair ranks #12,514 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of CSM vs CTC
Shared letters: c. Private to "CSM": ms. Private to "CTC": t.
"CSM" · 3 letters · shape CCC · "CTC" · 3 letters · shape CCC
Frequently Asked Questions
Can "CSM" and "CTC" be used interchangeably?
Which is more common, "CSM" or "CTC"?
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 "CSM" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "CTC" - compare definitions side by side with the headword page. Word entry
- This pair ranks #12,514 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "CSM" and "CTC" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs CTC". Nearby pair
Confusion rank #12,514 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.