Which to use
“caso” is a noun and “casto” is an adjective - they look or sound alike but fill different roles in a sentence.
- #157
- “caso” frequency rank
- #44,616
- “casto” frequency rank
- 44773
- confusion score
Side-by-Side Comparison
| Feature | caso | casto |
|---|---|---|
| Definition | Cada una de varias instancias consideradas como pertenecientes a un mismo tipo de situaciones o cosas (como los casos de una enfermedad, etc.). | Persona que se abstiene de todo goce sexual o lo vive de acuerdo a ciertas directrices dictadas por su religión o su moral. |
Where the eye mixes caso and casto
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. caso runs 4 letters (CVCV) against casto's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: caso vs casto
These two trip readers on the page rather than in the ear: caso is [ˈkaso] while casto is [ˈkast̪o]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 44773, derived from the frequency rank of both members and their visual similarity.
caso is recorded at frequency rank #157, classified as anoun, pronounced [ˈkaso]. casto is at rank #44,616, tagged as anadj, pronounced [ˈkast̪o].
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 44773, this pair ranks #135,199 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of caso vs casto
Shared letters: acos. Private to "caso": -. Private to "casto": t.
"caso" · 4 letters · shape CVCV · "casto" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Can "caso" and "casto" be used interchangeably?
Frequency check: "caso" vs "casto" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "caso" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "casto" - compare definitions side by side with the headword page. Word entry
- This pair ranks #135,199 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "caso" and "casto" also get mixed up with nearby pairs, the highest-scored neighbour is "casto vs Chasco". 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 #135,199 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.