Which to use
“CFF” and “CM2” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #46,639
- “CFF” frequency rank
- #18,150
- “CM2” frequency rank
- 64789
- confusion score
Side-by-Side Comparison
| Feature | CFF | CM2 |
|---|---|---|
| Definition | Société anonyme (détenue à 100 % par la Confédération suisse) exploitant les chemins de fer suisses. | Cinquième et dernière classe de l’école élémentaire et seconde du cycle des approfondissements (Cycle 3). |
Where the eye mixes CFF and CM2
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: CFF vs CM2
A purely visual mix-up. CFF (\se.ɛf.ɛf\) and CM2 (\se.ɛm.dø\) 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 64789, 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\. CM2 is at rank #18,150, tagged as anoun, pronounced \se.ɛm.dø\.
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 64789, this pair ranks #75,324 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of CFF vs CM2
Shared letters: c. Private to "CFF": f. Private to "CM2": m.
"CFF" · 3 letters · shape CCC · "CM2" · 2 letters · shape CC
Frequently Asked Questions
Is swapping "CFF" for "CM2" ever safe?
Frequency check: "CFF" vs "CM2" - which ranks higher?
After this comparison
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 "CM2" - compare definitions side by side with the headword page. Word entry
- This pair ranks #75,324 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "CFF" and "CM2" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs CFF". Nearby pair
Confusion rank #75,324 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.