CFFvsCRCWhich spelling fits?

Which to use

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

#46,639
“CFF” frequency rank
#41,205
“CRC” frequency rank
87844
confusion score

Side-by-Side Comparison

Feature CFF CRC
Definition Société anonyme (détenue à 100 % par la Confédération suisse) exploitant les chemins de fer suisses. Outil logiciel permettant de détecter les erreurs de transmission ou de transfert des données.

Letter map: CFF vs CRC

Shared letters muted; letters that set CFF and CRC apart highlighted. Shared run: 1. CFF and CRC 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
CRC

Corpus notes: CFF and CRC

CFF and CRC are indexed as a confusable French pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 87844, 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\. CRC is at rank #41,205, tagged as anoun.

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 87844, this pair ranks #7,728 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of CFF vs CRC

Shared letters: c. Private to "CFF": f. Private to "CRC": r.

"CFF" · 3 letters · shape CCC  ·  "CRC" · 3 letters · shape CCC

Frequently Asked Questions

Is swapping "CFF" for "CRC" ever safe?
No. They share most of their letters but differ in 2 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Which is more common, "CFF" or "CRC"?
"CRC" is the more common of the two: it sits at frequency rank #41,205 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.

Useful next steps

Pair "CFF" vs "CRC" is on the table, pick a follow-up below.

  • Full dictionary entry for "CFF" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "CRC" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #7,728 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "CFF" and "CRC" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs CFF". Nearby pair

Confusion rank #7,728 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