Which to use
“CFF” and “CRS” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #46,639
- “CFF” frequency rank
- #12,348
- “CRS” frequency rank
- 58987
- confusion score
Side-by-Side Comparison
| Feature | CFF | CRS |
|---|---|---|
| Definition | Société anonyme (détenue à 100 % par la Confédération suisse) exploitant les chemins de fer suisses. | Variante orthographique de C.R.S. |
Where the eye mixes CFF and CRS
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. CFF and CRS follow the identical consonant-vowel pattern (CCC). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses CFF with CRS
A purely visual mix-up. CFF (\se.ɛf.ɛf\) and CRS (\se.ɛ.ʁɛs\) 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 58987, 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\. CRS is at rank #12,348, tagged as anoun, pronounced \se.ɛ.ʁɛs\.
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 58987, this pair ranks #105,731 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of CFF vs CRS
Shared letters: c. Private to "CFF": f. Private to "CRS": rs.
"CFF" · 3 letters · shape CCC · "CRS" · 3 letters · shape CCC
Frequently Asked Questions
Is swapping "CFF" for "CRS" ever safe?
In ordinary French text, does "CFF" or "CRS" show up more?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "CFF" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "CRS" - compare definitions side by side with the headword page. Word entry
- This pair ranks #105,731 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "CFF" and "CRS" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs CFF". Nearby pair
Confusion rank #105,731 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.