coisovscosTell them apart

Quick tell: coiso is a noun, cos is a pronoun, so they fill different roles in a sentence.

Which to use

“coiso” is a noun and “cos” is a pronoun - they look or sound alike but fill different roles in a sentence.

#30,884
“coiso” frequency rank
#27,810
“cos” frequency rank
58694
confusion score

Side-by-Side Comparison

Feature coiso cos
Definition uma pessoa qualquer qualquer coisa

Letter map: coiso vs cos

Shared letters muted; letters that set coiso and cos apart highlighted. Shared run: 3. coiso runs 5 letters (CVVCV) against cos's 3 (CVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
coiso
3 ch
cos

Part-of-speech tell for coiso / cos

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: coiso is anoun and cosapronoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 58694, derived from the frequency rank of both members and their visual similarity.

coiso is recorded at frequency rank #30,884, classified as anoun. 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 58694, this pair ranks #8,598 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of coiso vs cos

Shared letters: cos. Private to "coiso": i. Private to "cos": -.

"coiso" · 5 letters · shape CVVCV  ·  "cos" · 3 letters · shape CVC

Known mistypes of this pair

  • coiso ← ccoiso · cioso · coios · coisso · cosio · ociso

Frequently Asked Questions

Can "coiso" and "cos" be used interchangeably?
No - they are not even the same part of speech. "coiso" is a noun and "cos" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "coiso" vs "cos" - which ranks higher?
"cos" is the more common of the two: it sits at frequency rank #27,810 in our Portuguese list, against #30,884 for "coiso". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "coiso" and "cos".

  • Full dictionary entry for "coiso" 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 #8,598 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "coiso" and "cos" also get mixed up with nearby pairs, the highest-scored neighbour is "ciao vs coiso". 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 #8,598 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list