Which to use
“co” is a noun and “cy” is an adverb - they look or sound alike but fill different roles in a sentence.
- #1,856
- “co” frequency rank
- #27,395
- “cy” frequency rank
- 29251
- confusion score
Side-by-Side Comparison
| Feature | co | cy |
|---|---|---|
| Definition | Connexion. | Ci. |
Letter map: co vs cy
Shared letters muted; letters that set co and cy apart highlighted. Shared run: 1.
Part-of-speech tell for co / cy
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: co is anoun and cyanadverb. On the page they differ by a single letter - o in “co” becomes y in “cy”. Our composite confusion score for this pair is 29251, derived from the frequency rank of both members and their visual similarity.
co is recorded at frequency rank #1,856, classified as anoun, pronounced \ko\. cy is at rank #27,395, tagged as anadv.
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 29251, this pair ranks #317,839 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of co vs cy
Shared letters: c. Private to "co": o. Private to "cy": y.
"co" · 2 letters · shape CV · "cy" · 2 letters · shape CV
Frequently Asked Questions
Is swapping "co" for "cy" ever safe?
Frequency check: "co" vs "cy" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "co" and "cy".
- Full dictionary entry for "co" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cy" - compare definitions side by side with the headword page. Word entry
- This pair ranks #317,839 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "co" and "cy" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs cy". Nearby pair
Confusion rank #317,839 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.