cas vs cy, What's the Difference?

Which to use

“cas” is a noun and “cy” is an adverb - they look or sound alike but fill different roles in a sentence.

#157
“cas” frequency rank: #27,395
“cy” frequency rank: 27552
confusion score

Side-by-Side Comparison

Feature	cas	cy
Definition	Accident, aventure, conjoncture, occasion ; fait arrivé, ou qui peut arriver.	Ci.

Letter map: cas vs cy

Shared letters muted; letters that set cas and cy apart highlighted. Shared run: 1.

3 ch

cas

2 ch

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cas is anoun and cyanadverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 27552, derived from the frequency rank of both members and their visual similarity.

cas is recorded at frequency rank #157, classified as anoun, pronounced \kɑ\. 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 27552, this pair ranks #328,244 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cas vs cy

Shared letters: c. Private to "cas": as. Private to "cy": y.

"cas" · 3 letters · shape CVC · "cy" · 2 letters · shape CV

Frequently Asked Questions

Can "cas" and "cy" be used interchangeably?

No - they are not even the same part of speech. "cas" is a noun and "cy" an adverb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "cas" or "cy"?

"cas" is the more common of the two: it sits at frequency rank #157 in our French list, against #27,395 for "cy". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "cas" and "cy". Here's where to go from here.

Full dictionary entry for "cas" 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 #328,244 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"cas" and "cy" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs cy". Nearby pair

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.