ka vs ko, What's the Difference?

Which to use

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

#14,298
“ka” frequency rank: #9,864
“ko” frequency rank: 24162
confusion score

Side-by-Side Comparison

Feature	ka	ko
Definition	Autre appellation du kaon.	Configuration cyclique de pions, si fréquente que des règles spécifiques la traitent.

Where the eye mixes ka and ko

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch

Visual trap between ka and ko

A purely visual mix-up. ka (\kɑ\) and ko (\ko\) 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 - a in “ka” becomes o in “ko”. Our composite confusion score for this pair is 24162, derived from the frequency rank of both members and their visual similarity.

ka is recorded at frequency rank #14,298, classified as anoun, pronounced \kɑ\. ko is at rank #9,864, tagged as anoun, pronounced \ko\.

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 24162, this pair ranks #348,217 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ka vs ko

Shared letters: k. Private to "ka": a. Private to "ko": o.

"ka" · 2 letters · shape CV · "ko" · 2 letters · shape CV

Frequently Asked Questions

Is swapping "ka" for "ko" ever safe?

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

Frequency check: "ka" vs "ko" - which ranks higher?

"ko" is the more common of the two: it sits at frequency rank #9,864 in our French list, against #14,298 for "ka". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "ka" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ko" - compare definitions side by side with the headword page. Word entry
This pair ranks #348,217 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"ka" and "ko" also get mixed up with nearby pairs, the highest-scored neighbour is "ka vs ky". Nearby pair

Confusion rank #348,217 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.