casevscasoTell them apart

Quick tell: case is a verb, caso is a noun, so they fill different roles in a sentence.

Which to use

“case” is a verb and “caso” is a noun - they look or sound alike but fill different roles in a sentence.

#10,632
“case” frequency rank
#157
“caso” frequency rank
10789
confusion score

Side-by-Side Comparison

Feature case caso
Definition Primera persona del singular (yo) del presente de subjuntivo de casar. Cada una de varias instancias consideradas como pertenecientes a un mismo tipo de situaciones o cosas (como los casos de una enfermedad, etc.).

Where the eye mixes case and caso

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

4 ch
case
4 ch
caso

Look-alike desk: case vs caso

These two trip readers on the page rather than in the ear: case is [ˈkase] while caso is [ˈkaso]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - e in “case” becomes o in “caso”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 10789, derived from the frequency rank of both members and their visual similarity.

case is recorded at frequency rank #10,632, classified as averb, pronounced [ˈkase]. caso is at rank #157, tagged as anoun, pronounced [ˈkaso].

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 10789, this pair ranks #297,364 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of case vs caso

Shared letters: acs. Private to "case": e. Private to "caso": o.

"case" · 4 letters · shape CVCV  ·  "caso" · 4 letters · shape CVCV

Known mistypes of this pair

  • caseacse · cace · casse · ccase · csae
  • casoacso · casso · ccaso · csao

Frequently Asked Questions

Can "case" and "caso" be used interchangeably?
No - they are not even the same part of speech. "case" is a verb and "caso" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "case" vs "caso" - which ranks higher?
"caso" is the more common of the two: it sits at frequency rank #157 in our Spanish list, against #10,632 for "case". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "case" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "caso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #297,364 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "case" and "caso" also get mixed up with nearby pairs, the highest-scored neighbour is "case vs catre". 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 #297,364 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