Which to use
“C1” and “C2” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #12,528
- “C1” frequency rank
- #26,652
- “C2” frequency rank
- 39180
- confusion score
Side-by-Side Comparison
| Feature | C1 | C2 |
|---|---|---|
| Definition | Niveau de langue correspondant à un niveau expérimenté (autonome) : personne capable de comprendre des textes longs et exigeants et saisir des significations implicites ; s’exprimer spontanément et couramment sans trop devoir chercher ses mots ; utiliser la langue de façon efficace et souple dans la vie sociale, professionnelle ou académique ; s’exprimer sur des sujets complexes de façon claire et bien structurée et manifester son contrôle des outils linguistiques d'organisation, d’articulation et de cohésion du discours. | Niveau de langue correspondant à un niveau expérimenté (maîtrise) : personne capable de comprendre sans effort pratiquement tout ce qui est lu ou entendu ; pouvoir restituer des faits et des arguments issus de diverses sources écrites et orales en les résumant de façon cohérente ; s’exprimer spontanément, très couramment, de façon précise et rendre distinctes de fines nuances de sens en rapport avec des sujets complexes. |
Where the eye mixes C1 and C2
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between C1 and C2
A purely visual mix-up. C1 (\se.œ̃\) and C2 (\se.dø\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by a single letter - 1 in “C1” becomes 2 in “C2”. Our composite confusion score for this pair is 39180, derived from the frequency rank of both members and their visual similarity.
C1 is recorded at frequency rank #12,528, classified as anoun, pronounced \se.œ̃\. C2 is at rank #26,652, tagged as anoun, pronounced \se.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 39180, this pair ranks #249,903 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of C1 vs C2
Shared letters: c. Private to "C1": -. Private to "C2": -.
"C1" · 1 letters · shape C · "C2" · 1 letters · shape C
Frequently Asked Questions
Is swapping "C1" for "C2" ever safe?
Which is more common, "C1" or "C2"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "C1" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "C2" - compare definitions side by side with the headword page. Word entry
- This pair ranks #249,903 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "C1" and "C2" also get mixed up with nearby pairs, the highest-scored neighbour is "C2 vs CCE". Nearby pair
Confusion rank #249,903 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.