Which to use
“casco” and “custo” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #14,093
- “casco” frequency rank
- #1,773
- “custo” frequency rank
- 15866
- confusion score
Side-by-Side Comparison
| Feature | casco | custo |
|---|---|---|
| Definition | invólucro do crânio | o quanto algo custa, o preço de algo |
Where the eye mixes casco and custo
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses casco with custo
A purely visual mix-up. casco (/ˈkaʃ.ku/) and custo (/ˈkuʃ.tu/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 15866, derived from the frequency rank of both members and their visual similarity.
casco is recorded at frequency rank #14,093, classified as anoun, pronounced /ˈkaʃ.ku/. custo is at rank #1,773, tagged as anoun, pronounced /ˈkuʃ.tu/.
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 15866, this pair ranks #55,859 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of casco vs custo
Shared letters: cos. Private to "casco": a. Private to "custo": tu.
"casco" · 5 letters · shape CVCCV · "custo" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Can "casco" and "custo" be used interchangeably?
Which is more common, "casco" or "custo"?
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 "casco" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "custo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #55,859 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "casco" and "custo" also get mixed up with nearby pairs, the highest-scored neighbour is "casco vs caução". 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 #55,859 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.