cai vs ces, What's the Difference?

Which to use

“cai” is a noun and “ces” is a determiner - they look or sound alike but fill different roles in a sentence.

#46,045
“cai” frequency rank: #74
“ces” frequency rank: 46119
confusion score

Side-by-Side Comparison

Feature	cai	ces
Definition	Bien, affaire, objet, chose, fortune.	Pluriel de ce et cette.

Where the spellings diverge

Shared letters are muted; the letters that actually set cai and ces apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch

cai

3 ch

ces

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: cai is \kaj\ while ces is \se\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs determiner), which is usually the fastest check. Our composite confusion score for this pair is 46119, derived from the frequency rank of both members and their visual similarity.

cai is recorded at frequency rank #46,045, classified as anoun, pronounced \kaj\. ces is at rank #74, tagged as adet, pronounced \se\.

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 46119, this pair ranks #197,453 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cai vs ces

Shared letters: c. Private to "cai": ai. Private to "ces": es.

"cai" · 3 letters · shape CVV · "ces" · 3 letters · shape CVC

Frequency comparison

cai#46,045

ces#74

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "cai" and "ces" be used interchangeably?

No - they are not even the same part of speech. "cai" is a noun and "ces" a determiner, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "cai" or "ces"?

"ces" is the more common of the two: it sits at frequency rank #74 in our French list, against #46,045 for "cai". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering cai vs ces

The fastest way to pick the right one every time.

Check the role first: if you need a noun, it's “cai”; for a determiner, it's “ces”.
See each word in full, definition, IPA, etymology and its other confusables. Full “cai” entry
Browse more pairs most likely to be confused. Most confusable