Which to use
“casen” is a verb and “caspa” is a noun - they look or sound alike but fill different roles in a sentence.
- #31,692
- “casen” frequency rank
- #33,479
- “caspa” frequency rank
- 65171
- confusion score
Side-by-Side Comparison
| Feature | casen | caspa |
|---|---|---|
| Definition | Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del presente de subjuntivo de casar o de casarse. | Sustancia blanquecina que se forma en el cabello por acumulación de piel muerta. |
Where the eye mixes casen and caspa
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. casen (CVCVC) and caspa (CVCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between casen and caspa
These two trip readers on the page rather than in the ear: casen is [ˈkasẽn] while caspa is [ˈkaspa]. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 65171, derived from the frequency rank of both members and their visual similarity.
casen is recorded at frequency rank #31,692, classified as averb, pronounced [ˈkasẽn]. caspa is at rank #33,479, tagged as anoun, pronounced [ˈkaspa].
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 65171, this pair ranks #43,439 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of casen vs caspa
Shared letters: acs. Private to "casen": en. Private to "caspa": p.
"casen" · 5 letters · shape CVCVC · "caspa" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "casen" for "caspa" ever safe?
In ordinary Spanish text, does "casen" or "caspa" show up more?
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 "casen" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "caspa" - compare definitions side by side with the headword page. Word entry
- This pair ranks #43,439 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "casen" and "caspa" 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 #43,439 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.