casovscuajoWhich spelling fits?

Which to use

“caso” and “cuajo” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#157
“caso” frequency rank
#44,674
“cuajo” frequency rank
44831
confusion score

Side-by-Side Comparison

Feature caso cuajo
Definition Cada una de varias instancias consideradas como pertenecientes a un mismo tipo de situaciones o cosas (como los casos de una enfermedad, etc.). Fermento que existe en el estómago de los mamíferos y que sirve para coagular la caseína de la leche.

Where the eye mixes caso and cuajo

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. caso runs 4 letters (CVCV) against cuajo's 5 (CVVCV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
caso
5 ch
cuajo

Visual trap between caso and cuajo

A purely visual mix-up. caso ([ˈkaso]) and cuajo ([ˈkwaxo]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 44831, derived from the frequency rank of both members and their visual similarity.

caso is recorded at frequency rank #157, classified as anoun, pronounced [ˈkaso]. cuajo is at rank #44,674, tagged as anoun, pronounced [ˈkwaxo].

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 44831, this pair ranks #134,871 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of caso vs cuajo

Shared letters: aco. Private to "caso": s. Private to "cuajo": ju.

"caso" · 4 letters · shape CVCV  ·  "cuajo" · 5 letters · shape CVVCV

Known mistypes of this pair

  • caso ← acso · casso · ccaso · csao
  • cuajo ← caujo · ccuajo · cuajjo · cuaoj · cujao · ucajo

Frequently Asked Questions

Do "caso" and "cuajo" mean the same thing in a sentence?
No. They are said differently ([ˈkaso] versus [ˈkwaxo]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "caso" or "cuajo"?
"caso" is the more common of the two: it sits at frequency rank #157 in our Spanish list, against #44,674 for "cuajo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Eye-level mix-up between "caso" and "cuajo" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "caso" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cuajo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #134,871 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "caso" and "cuajo" 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 #134,871 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