K vs ka, What's the Difference?

Which to use

“K” is a character and “ka” is a noun - they look or sound alike but fill different roles in a sentence.

#1,616
“K” frequency rank: #11,901
“ka” frequency rank: 13517
confusion score

Side-by-Side Comparison

Feature	K	ka
Definition	a décima primeira letra do alfabeto português, precedida por J e seguida por L	nome dos kana か e カ

Same sound, different letters: K vs ka

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 1 letter.

1 ch

2 ch

Same sound, different spelling - K / ka

Say them out loud and nothing separates them: K and ka carry the same recorded pronunciation, /ka/. Grammar is what tells them apart: one is acharacter, the other anoun, so most sentences will only accept one of them. They differ by 1 extra letter(s) - “K” sits inside “ka”. Our composite confusion score for this pair is 13517, derived from the frequency rank of both members and their visual similarity.

K is recorded at frequency rank #1,616, classified as acharacter, pronounced /ka/. ka is at rank #11,901, tagged as anoun, pronounced /ˈka/.

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 13517, this pair ranks #58,796 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of K vs ka

Shared letters: k. Private to "K": -. Private to "ka": a.

"K" · 1 letters · shape C · "ka" · 2 letters · shape CV

Frequently Asked Questions

Can "K" and "ka" be used interchangeably?

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

In ordinary Portuguese text, does "K" or "ka" show up more?

"K" is the more common of the two: it sits at frequency rank #1,616 in our Portuguese list, against #11,901 for "ka". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

"K" and "ka" share a sound, keep the gloss open, then jump to the headword or a nearby trap.

Full dictionary entry for "K" 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 #58,796 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"K" and "ka" also get mixed up with nearby pairs, the highest-scored neighbour is "ka vs kari". Nearby pair

Confusion rank #58,796 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.