ki vs qui, What's the Difference?

Which to use

“ki” is a noun and “qui” is a pronoun - they look or sound alike but fill different roles in a sentence.

#13,500
“ki” frequency rank: #12,907
“qui” frequency rank: 26407
confusion score

Side-by-Side Comparison

Feature	ki	qui
Definition	Perro.	Quién.

Same sound, different letters: ki vs qui

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 1 letter. ki runs 2 letters (CV) against qui's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.

2 ch

3 ch

qui

Ear matches; page differs - ki and qui

Say them out loud and nothing separates them: ki and qui carry the same recorded pronunciation, /ˈkiː/. Grammar is what tells them apart: one is anoun, the other apronoun, so most sentences will only accept one of them. They differ by 1 letter(s) in length. Our composite confusion score for this pair is 26407, derived from the frequency rank of both members and their visual similarity.

ki is recorded at frequency rank #13,500, classified as anoun, pronounced /ˈkiː/. qui is at rank #12,907, tagged as apron, pronounced [ˈki].

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 26407, this pair ranks #231,774 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ki vs qui

Shared letters: i. Private to "ki": k. Private to "qui": qu.

"ki" · 2 letters · shape CV · "qui" · 3 letters · shape CVV

Frequently Asked Questions

Do "ki" and "qui" mean the same thing in a sentence?

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

In ordinary Spanish text, does "ki" or "qui" show up more?

"qui" is the more common of the two: it sits at frequency rank #12,907 in our Spanish list, against #13,500 for "ki". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Sound matches; spelling doesn't. Use the exits below to lock the right form or check a cousin pair.

Full dictionary entry for "ki" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "qui" - compare definitions side by side with the headword page. Word entry
This pair ranks #231,774 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
"ki" and "qui" also get mixed up with nearby pairs, the highest-scored neighbour is "Qom vs qui". Nearby pair

Confusion rank #231,774 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.