kivsquiWhat's the difference?

Quick tell: ki is a noun, qui is a pronoun, so they fill different roles in a sentence.

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.

Where the spellings diverge

Shared letters are muted; the letters that actually set ki and qui apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

2 ch
ki
3 ch
qui

Spelling & Dictionary Insight

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

Frequency comparison

ki#13,500
qui#12,907

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "ki" and "qui" be used interchangeably?
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.
Which is more common, "ki" or "qui"?
"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.

Remembering ki vs qui

The fastest way to pick the right one every time.

  • Check the role first: if you need a noun, it's “ki”; for a pronoun, it's “qui”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “ki” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list