Which to use
“casilla” and “castillo” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #10,993
- “casilla” frequency rank
- #2,237
- “castillo” frequency rank
- 13230
- confusion score
Side-by-Side Comparison
| Feature | casilla | castillo |
|---|---|---|
| Definition | Cada división de las que se compone un casillero. | Recinto fortificado, típico de la arquitectura militar del Medioevo, en especial el dotado de murallas y torres para su defensa |
Where the eye mixes casilla and castillo
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. casilla runs 7 letters (CVCVCCV) against castillo's 8 (CVCCVCCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between casilla and castillo
A purely visual mix-up. casilla ([kaˈsiʝa]) and castillo ([kasˈt̪iʝo]) 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 13230, derived from the frequency rank of both members and their visual similarity.
casilla is recorded at frequency rank #10,993, classified as anoun, pronounced [kaˈsiʝa]. castillo is at rank #2,237, tagged as anoun, pronounced [kasˈt̪iʝo].
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 13230, this pair ranks #288,617 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of casilla vs castillo
Shared letters: acils. Private to "casilla": -. Private to "castillo": ot.
"casilla" · 7 letters · shape CVCVCCV · "castillo" · 8 letters · shape CVCCVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "casilla" for "castillo" ever safe?
Frequency check: "casilla" vs "castillo" - 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 "casilla" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "castillo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #288,617 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "casilla" and "castillo" also get mixed up with nearby pairs, the highest-scored neighbour is "canillas vs casilla". 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 #288,617 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.