Which to use
“casilla” is a noun and “Castilla” is a name - they look or sound alike but fill different roles in a sentence.
- #10,993
- “casilla” frequency rank
- #2,814
- “Castilla” frequency rank
- 13807
- confusion score
Side-by-Side Comparison
| Feature | casilla | Castilla |
|---|---|---|
| Definition | Cada división de las que se compone un casillero. | Región histórica de España. |
Where the eye mixes casilla and Castilla
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. casilla runs 7 letters (CVCVCCV) against Castilla's 8 (CVCCVCCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: casilla vs Castilla
These two trip readers on the page rather than in the ear: casilla is [kaˈsiʝa] while Castilla is [kasˈt̪iʝa]. 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 name), which is usually the fastest check. Our composite confusion score for this pair is 13807, 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]. Castilla is at rank #2,814, tagged as aname, pronounced [kasˈt̪iʝa].
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 13807, this pair ranks #286,482 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of casilla vs Castilla
Shared letters: acils. Private to "casilla": -. Private to "Castilla": t.
"casilla" · 7 letters · shape CVCVCCV · "Castilla" · 8 letters · shape CVCCVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "casilla" for "Castilla" ever safe?
Which is more common, "casilla" or "Castilla"?
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 "Castilla" - compare definitions side by side with the headword page. Word entry
- This pair ranks #286,482 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "casilla" and "Castilla" 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 #286,482 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.