Which to use
“case” is a noun and “cos” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #6,149
- “case” frequency rank
- #27,810
- “cos” frequency rank
- 33959
- confusion score
Side-by-Side Comparison
| Feature | case | cos |
|---|---|---|
| Definition | caso | qualquer coisa |
Letter map: case vs cos
Shared letters muted; letters that set case and cos apart highlighted. Shared run: 2.
Role in the sentence - case and cos
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: case is anoun and cosapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 33959, derived from the frequency rank of both members and their visual similarity.
case is recorded at frequency rank #6,149, classified as anoun, pronounced /keɪs/. 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 33959, this pair ranks #33,430 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of case vs cos
Shared letters: cs. Private to "case": ae. Private to "cos": o.
"case" · 4 letters · shape CVCV · "cos" · 3 letters · shape CVC
Known mistypes of this pair
- case ← acse · caes · casse · ccase · csae
Frequently Asked Questions
Do "case" and "cos" mean the same thing in a sentence?
Which is more common, "case" or "cos"?
What to do next
You've compared "case" and "cos". Here's where to go from here.
- Full dictionary entry for "case" 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 #33,430 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "case" 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 #33,430 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.