Which to use
“cais” is a noun and “cos” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #10,845
- “cais” frequency rank
- #27,810
- “cos” frequency rank
- 38655
- confusion score
Side-by-Side Comparison
| Feature | cais | cos |
|---|---|---|
| Definition | lugar à beira-mar, na margem do rio, nas estações de caminho-de-ferro ou do metropolitano apropriado para o embarque e desembarque de pessoas ou mercadorias | qualquer coisa |
Letter map: cais vs cos
Shared letters muted; letters that set cais and cos apart highlighted. Shared run: 2.
Part-of-speech tell for cais / cos
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cais is anoun and cosapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 38655, derived from the frequency rank of both members and their visual similarity.
cais is recorded at frequency rank #10,845, classified as anoun, pronounced /ˈkajʃ/. cos is at rank #27,810, tagged as apron.
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 38655, this pair ranks #27,739 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of cais vs cos
Shared letters: cs. Private to "cais": ai. Private to "cos": o.
"cais" · 4 letters · shape CVVC · "cos" · 3 letters · shape CVC
Known mistypes of this pair
- cais ← acis · caiss · casi · ccais · cias
Frequently Asked Questions
Can "cais" and "cos" be used interchangeably?
Which is more common, "cais" or "cos"?
After this comparison
Done with this confusable. These links stay specific to "cais" and "cos".
- Full dictionary entry for "cais" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cos" - compare definitions side by side with the headword page. Word entry
- This pair ranks #27,739 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "cais" and "cos" also get mixed up with nearby pairs, the highest-scored neighbour is "coin vs cos". 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 #27,739 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.