Which to use
“K9” and “ka” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #36,625
- “K9” frequency rank
- #9,201
- “ka” frequency rank
- 45826
- confusion score
Side-by-Side Comparison
| Feature | K9 | ka |
|---|---|---|
| Definition | A trained police dog. | A spiritual part of the soul in Egyptian mythology, which survived after death. |
Where the eye mixes K9 and ka
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. K9 runs 1 letters (C) against ka's 2 (CV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses K9 with ka
A purely visual mix-up. K9 (/ˈkeɪnaɪn/) and ka (/kɑː/) 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 - 9 in “K9” becomes a in “ka”. Our composite confusion score for this pair is 45826, derived from the frequency rank of both members and their visual similarity.
K9 is recorded at frequency rank #36,625, classified as anoun, pronounced /ˈkeɪnaɪn/. ka is at rank #9,201, tagged as anoun, pronounced /kɑː/.
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 45826, this pair ranks #217,561 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of K9 vs ka
Shared letters: k. Private to "K9": -. Private to "ka": a.
"K9" · 1 letters · shape C · "ka" · 2 letters · shape CV
Frequently Asked Questions
Is swapping "K9" for "ka" ever safe?
Which is more common, "K9" or "ka"?
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 "K9" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ka" - compare definitions side by side with the headword page. Word entry
- This pair ranks #217,561 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "K9" and "ka" also get mixed up with nearby pairs, the highest-scored neighbour is "K9 vs Kop". Nearby pair
Confusion rank #217,561 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.