CFFvsCMPWhich spelling fits?

Which to use

“CFF” and “CMP” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#46,639
“CFF” frequency rank
#40,674
“CMP” frequency rank
87313
confusion score

Side-by-Side Comparison

Feature CFF CMP
Definition Société anonyme (détenue à 100 % par la Confédération suisse) exploitant les chemins de fer suisses. Centre médico-psychologique.

Where the eye mixes CFF and CMP

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. CFF and CMP follow the identical consonant-vowel pattern (CCC). Same shape at a glance is often the real trap, independent of shared letters.

3 ch
CFF
3 ch
CMP

Why the eye confuses CFF with CMP

A purely visual mix-up. CFF (\se.ɛf.ɛf\) and CMP (\se.ɛm.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 87313, 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\. CMP is at rank #40,674, tagged as anoun, pronounced \se.ɛm.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 87313, this pair ranks #8,434 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of CFF vs CMP

Shared letters: c. Private to "CFF": f. Private to "CMP": mp.

"CFF" · 3 letters · shape CCC  ·  "CMP" · 3 letters · shape CCC

Frequently Asked Questions

Do "CFF" and "CMP" mean the same thing in a sentence?
No. They are said differently (\se.ɛf.ɛf\ versus \se.ɛm.pe\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "CFF" or "CMP"?
"CMP" is the more common of the two: it sits at frequency rank #40,674 in our French list, against #46,639 for "CFF". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "CMP" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #8,434 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "CFF" and "CMP" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs CFF". Nearby pair

Confusion rank #8,434 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list