Which to use
“castelo” and “casulo” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #2,822
- “castelo” frequency rank
- #32,503
- “casulo” frequency rank
- 35325
- confusion score
Side-by-Side Comparison
| Feature | castelo | casulo |
|---|---|---|
| Definition | habitação antiga fortificada | vagem que envolve as sementes, nas favas e outras leguminosas |
Where the eye mixes castelo and casulo
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Why the eye confuses castelo with casulo
A purely visual mix-up. castelo (/kɐʃ.ˈtɛ.lu/) and casulo (/kɐ.ˈzu.lu/) 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 35325, derived from the frequency rank of both members and their visual similarity.
castelo is recorded at frequency rank #2,822, classified as anoun, pronounced /kɐʃ.ˈtɛ.lu/. casulo is at rank #32,503, tagged as anoun, pronounced /kɐ.ˈzu.lu/.
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 35325, this pair ranks #31,726 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of castelo vs casulo
Shared letters: aclos. Private to "castelo": et. Private to "casulo": u.
"castelo" · 7 letters · shape CVCCVCV · "casulo" · 6 letters · shape CVCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "castelo" for "casulo" ever safe?
Frequency check: "castelo" vs "casulo" - which ranks higher?
Useful next steps
Eye-level mix-up between "castelo" and "casulo" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "castelo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "casulo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #31,726 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "castelo" and "casulo" also get mixed up with nearby pairs, the highest-scored neighbour is "casulo vs coágulo". 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 #31,726 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.