Which to use
“castillo” and “costilla” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #2,237
- “castillo” frequency rank
- #21,283
- “costilla” frequency rank
- 23520
- confusion score
Side-by-Side Comparison
| Feature | castillo | costilla |
|---|---|---|
| Definition | Recinto fortificado, típico de la arquitectura militar del Medioevo, en especial el dotado de murallas y torres para su defensa | Hueso largo y curvo que da forma y estructura al tórax |
Where the eye mixes castillo and costilla
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. castillo and costilla follow the identical consonant-vowel pattern (CVCCVCCV). Same shape at a glance is often the real trap, independent of shared letters.
Look-alike desk: castillo vs costilla
A purely visual mix-up. castillo ([kasˈt̪iʝo]) and costilla ([kosˈt̪iʝa]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they are an anagram pair: the same letters reordered. Our composite confusion score for this pair is 23520, derived from the frequency rank of both members and their visual similarity.
castillo is recorded at frequency rank #2,237, classified as anoun, pronounced [kasˈt̪iʝo]. costilla is at rank #21,283, tagged as anoun, pronounced [kosˈt̪iʝa].
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 23520, this pair ranks #245,424 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of castillo vs costilla
Shared letters: acilost. Private to "castillo": -. Private to "costilla": -.
"castillo" · 8 letters · shape CVCCVCCV · "costilla" · 8 letters · shape CVCCVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "castillo" and "costilla" mean the same thing in a sentence?
In ordinary Spanish text, does "castillo" or "costilla" show up more?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "castillo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "costilla" - compare definitions side by side with the headword page. Word entry
- This pair ranks #245,424 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "castillo" and "costilla" also get mixed up with nearby pairs, the highest-scored neighbour is "castillejo vs castillo". 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 #245,424 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.