Which to use
“CFF” and “CSP” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #46,639
- “CFF” frequency rank
- #19,499
- “CSP” frequency rank
- 66138
- confusion score
Side-by-Side Comparison
| Feature | CFF | CSP |
|---|---|---|
| Definition | Société anonyme (détenue à 100 % par la Confédération suisse) exploitant les chemins de fer suisses. | Catégorie socioprofessionnelle (le concept), catégories socioprofessionnelles (la nomenclature de l’Insee). |
Where the eye mixes CFF and CSP
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: CFF vs CSP
A purely visual mix-up. CFF (\se.ɛf.ɛf\) and CSP (\se.ɛs.pe\) 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 66138, derived from the frequency rank of both members and their visual similarity.
CFF is recorded at frequency rank #46,639, classified as anoun, pronounced \se.ɛf.ɛf\. CSP is at rank #19,499, tagged as anoun, pronounced \se.ɛs.pe\.
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 66138, this pair ranks #69,122 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of CFF vs CSP
Shared letters: c. Private to "CFF": f. Private to "CSP": ps.
"CFF" · 3 letters · shape CCC · "CSP" · 3 letters · shape CCC
Frequently Asked Questions
Is swapping "CFF" for "CSP" ever safe?
In ordinary French text, does "CFF" or "CSP" show up more?
Useful next steps
Eye-level mix-up between "CFF" and "CSP" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "CFF" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "CSP" - compare definitions side by side with the headword page. Word entry
- This pair ranks #69,122 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "CFF" and "CSP" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs CFF". Nearby pair
Confusion rank #69,122 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.