cai vs cas, What's the Difference?

Which to use

“cai” and “cas” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#46,045
“cai” frequency rank: #157
“cas” frequency rank: 46202
confusion score

Side-by-Side Comparison

Feature	cai	cas
Definition	Bien, affaire, objet, chose, fortune.	Accident, aventure, conjoncture, occasion ; fait arrivé, ou qui peut arriver.

Where the spellings diverge

Shared letters are muted; the letters that actually set cai and cas apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch

cai

3 ch

cas

Spelling & Dictionary Insight

A purely visual mix-up. cai (\kaj\) and cas (\kɑ\) 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 - i in “cai” becomes s in “cas”. Our composite confusion score for this pair is 46202, 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\. cas is at rank #157, tagged as anoun, pronounced \kɑ\.

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 46202, this pair ranks #196,802 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cai vs cas

Shared letters: ac. Private to "cai": i. Private to "cas": s.

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

Frequency comparison

cai#46,045

cas#157

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

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

No. They are said differently (\kaj\ versus \kɑ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

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

"cas" is the more common of the two: it sits at frequency rank #157 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 cas

The fastest way to pick the right one every time.

Read both glosses above and match the meaning you intend, only context separates this pair.
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