cuajovscurvoWhich spelling fits?

Quick tell: cuajo is a noun, curvo is an adjective, so they fill different roles in a sentence.

Which to use

“cuajo” is a noun and “curvo” is an adjective - they look or sound alike but fill different roles in a sentence.

#44,674
“cuajo” frequency rank
#43,495
“curvo” frequency rank
88169
confusion score

Side-by-Side Comparison

Feature cuajo curvo
Definition Fermento que existe en el estómago de los mamíferos y que sirve para coagular la caseína de la leche. Que se dobla o se aleja gradualmente de la línea o dirección recta sin formar ángulos.

Where the eye mixes cuajo and curvo

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
cuajo
5 ch
curvo

Why the eye confuses cuajo with curvo

These two trip readers on the page rather than in the ear: cuajo is [ˈkwaxo] while curvo is [ˈkuɾβ̞o]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 88169, derived from the frequency rank of both members and their visual similarity.

cuajo is recorded at frequency rank #44,674, classified as anoun, pronounced [ˈkwaxo]. curvo is at rank #43,495, tagged as anadj, pronounced [ˈkuɾβ̞o].

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 88169, this pair ranks #3,931 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of cuajo vs curvo

Shared letters: cou. Private to "cuajo": aj. Private to "curvo": rv.

"cuajo" · 5 letters · shape CVVCV  ·  "curvo" · 5 letters · shape CVCCV

Known mistypes of this pair

  • cuajocaujo · ccuajo · cuajjo · cuaoj · cujao · ucajo
  • curvoccurvo · cruvo · curbo · curov · currvo · curvvo · cuvro · ucrvo

Frequently Asked Questions

Can "cuajo" and "curvo" be used interchangeably?
No - they are not even the same part of speech. "cuajo" is a noun and "curvo" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "cuajo" or "curvo" show up more?
"curvo" is the more common of the two: it sits at frequency rank #43,495 in our Spanish list, against #44,674 for "cuajo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "cuajo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "curvo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #3,931 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "cuajo" and "curvo" also get mixed up with nearby pairs, the highest-scored neighbour is "Charo vs cuajo". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #3,931 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list