Which to use
“cei” is an article and “co” is a noun - they look or sound alike but fill different roles in a sentence.
- #31,876
- “cei” frequency rank
- #1,856
- “co” frequency rank
- 33732
- confusion score
Side-by-Side Comparison
| Feature | cei | co |
|---|---|---|
| Definition | Article adjectival (ou démonstratif) nominatif et accusatif masculin pluriel, généralement traduit par « les ». | Connexion. |
Letter map: cei vs co
Shared letters muted; letters that set cei and co apart highlighted. Shared run: 1.
Part-of-speech tell for cei / co
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cei is anarticle and coanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 33732, derived from the frequency rank of both members and their visual similarity.
cei is recorded at frequency rank #31,876, classified as anarticle. co is at rank #1,856, tagged as anoun, pronounced \ko\.
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 33732, this pair ranks #288,653 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of cei vs co
Shared letters: c. Private to "cei": ei. Private to "co": o.
"cei" · 3 letters · shape CVV · "co" · 2 letters · shape CV
Frequently Asked Questions
Do "cei" and "co" mean the same thing in a sentence?
Which is more common, "cei" or "co"?
What to do next
Pair "cei" vs "co" is on the table, pick a follow-up below.
- Full dictionary entry for "cei" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "co" - compare definitions side by side with the headword page. Word entry
- This pair ranks #288,653 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "cei" and "co" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs cei". Nearby pair
Confusion rank #288,653 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.