Which to use
“caos” is a noun and “caso” is a conjunction - they look or sound alike but fill different roles in a sentence.
- #4,128
- “caos” frequency rank
- #181
- “caso” frequency rank
- 4309
- confusion score
Side-by-Side Comparison
| Feature | caos | caso |
|---|---|---|
| Definition | espaço limitado e amorfo que precedeu à criação do cosmo | na hipótese de; se |
Where the eye mixes caos and caso
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses caos with caso
These two trip readers on the page rather than in the ear: caos is /ˈkaws/ while caso is /ˈka.zu/. Spoken aloud the problem disappears. In writing it persists, because they differ only by swapping two adjacent letters (os ↔ so) - a transposition the eye reads straight past, and the parts of speech differ too (noun vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 4309, derived from the frequency rank of both members and their visual similarity.
caos is recorded at frequency rank #4,128, classified as anoun, pronounced /ˈkaws/. caso is at rank #181, tagged as aconj, pronounced /ˈka.zu/.
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 4309, this pair ranks #70,638 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of caos vs caso
Shared letters: acos. Private to "caos": -. Private to "caso": -.
"caos" · 4 letters · shape CVVC · "caso" · 4 letters · shape CVCV
Known mistypes of this pair
Frequently Asked Questions
Can "caos" and "caso" be used interchangeably?
In ordinary Portuguese text, does "caos" or "caso" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "caos" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "caso" - compare definitions side by side with the headword page. Word entry
- This pair ranks #70,638 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "caos" and "caso" also get mixed up with nearby pairs, the highest-scored neighbour is "caos vs ciao". 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 #70,638 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.