ku vs Qu, What's the Difference?

Which to use

“ku” is a pronoun and “Qu” is a character - they look or sound alike but fill different roles in a sentence.

#29,714
“ku” frequency rank: #8,430
“Qu” frequency rank: 38144
confusion score

Side-by-Side Comparison

Feature	ku	Qu
Definition	Ese, esa. Pronombre y adjetivo demostrativo usado para una entidad ausente.	Dígrafo del alfabeto gallego. Su nombre es que u.

Where the spellings diverge

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

2 ch

Spelling & Dictionary Insight

Say them out loud and nothing separates them: ku and Qu carry the same recorded pronunciation, [ˈku]. Grammar is what tells them apart: one is apronoun, the other acharacter, so most sentences will only accept one of them. They differ by a single letter - k in “ku” becomes q in “Qu”. Our composite confusion score for this pair is 38144, derived from the frequency rank of both members and their visual similarity.

ku is recorded at frequency rank #29,714, classified as apron, pronounced [ˈku]. Qu is at rank #8,430, tagged as acharacter, pronounced [ˈku].

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 38144, this pair ranks #171,598 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ku vs Qu

Shared letters: u. Private to "ku": k. Private to "Qu": q.

"ku" · 2 letters · shape CV · "Qu" · 2 letters · shape CV

Frequency comparison

ku#29,714

Qu#8,430

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "ku" and "Qu" be used interchangeably?

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

Which is more common, "ku" or "Qu"?

"Qu" is the more common of the two: it sits at frequency rank #8,430 in our Spanish list, against #29,714 for "ku". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering ku vs Qu

The fastest way to pick the right one every time.

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