Which to use
“caspa” is a noun and “castas” is an adjective - they look or sound alike but fill different roles in a sentence.
- #33,479
- “caspa” frequency rank
- #17,066
- “castas” frequency rank
- 50545
- confusion score
Side-by-Side Comparison
| Feature | caspa | castas |
|---|---|---|
| Definition | Sustancia blanquecina que se forma en el cabello por acumulación de piel muerta. | Forma del femenino plural de casto. |
Where the eye mixes caspa and castas
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. caspa runs 5 letters (CVCCV) against castas's 6 (CVCCVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between caspa and castas
These two trip readers on the page rather than in the ear: caspa is [ˈkaspa] while castas is [ˈkast̪as]. 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 50545, derived from the frequency rank of both members and their visual similarity.
caspa is recorded at frequency rank #33,479, classified as anoun, pronounced [ˈkaspa]. castas is at rank #17,066, tagged as anadj, pronounced [ˈkast̪as].
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 50545, this pair ranks #102,634 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of caspa vs castas
Shared letters: acs. Private to "caspa": p. Private to "castas": t.
"caspa" · 5 letters · shape CVCCV · "castas" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "caspa" and "castas" be used interchangeably?
Which is more common, "caspa" or "castas"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "caspa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "castas" - compare definitions side by side with the headword page. Word entry
- This pair ranks #102,634 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "caspa" and "castas" also get mixed up with nearby pairs, the highest-scored neighbour is "casará vs caspa". 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 #102,634 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.