caivsCTCWhich spelling fits?

Which to use

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

#46,045
“cai” frequency rank
#44,964
“CTC” frequency rank
91009
confusion score

Side-by-Side Comparison

Feature cai CTC
Definition Bien, affaire, objet, chose, fortune. Cellule tumorale circulante.

Where the eye mixes cai and CTC

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. cai (CVV) and CTC (CCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
cai
3 ch
CTC

Look-alike desk: cai vs CTC

A purely visual mix-up. cai (\kaj\) and CTC (\se.te.se\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 91009, 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\. CTC is at rank #44,964, tagged as anoun, pronounced \se.te.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 91009, this pair ranks #4,244 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of cai vs CTC

Shared letters: c. Private to "cai": ai. Private to "CTC": t.

"cai" · 3 letters · shape CVV  ·  "CTC" · 3 letters · shape CCC

Frequently Asked Questions

Can "cai" and "CTC" be used interchangeably?
No. They are said differently (\kaj\ versus \se.te.se\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "cai" vs "CTC" - which ranks higher?
"CTC" is the more common of the two: it sits at frequency rank #44,964 in our French list, against #46,045 for "cai". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "cai" and "CTC" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "cai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "CTC" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #4,244 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "cai" and "CTC" also get mixed up with nearby pairs, the highest-scored neighbour is "cai vs CCE". Nearby pair

Confusion rank #4,244 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list