Which to use
“acaso” is an adverb and “arão” is a noun - they look or sound alike but fill different roles in a sentence.
- #2,759
- “acaso” frequency rank
- #30,004
- “arão” frequency rank
- 32763
- confusion score
Side-by-Side Comparison
| Feature | acaso | arão |
|---|---|---|
| Definition | casualmente | ave marinha, airo, também chamado arau-comum, Uria aalge |
Letter map: acaso vs arão
Shared letters muted; letters that set acaso and arão apart highlighted. Shared run: 2. acaso runs 5 letters (VCVCV) against arão's 4 (VCVV) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: acaso vs arão
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: acaso is anadverb and arãoanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 32763, derived from the frequency rank of both members and their visual similarity.
acaso is recorded at frequency rank #2,759, classified as anadv. arão is at rank #30,004, tagged as anoun, pronounced Singular: /ɐ.'ɾaŋ/, /ɐ.'ɾa.o/, /ɐ.'ɾaw/.
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 32763, this pair ranks #34,941 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of acaso vs arão
Shared letters: ao. Private to "acaso": cs. Private to "arão": rã.
"acaso" · 5 letters · shape VCVCV · "arão" · 4 letters · shape VCVV
Known mistypes of this pair
- acaso ← aacso · acaos · acasso · accaso · acsao · caaso
Frequently Asked Questions
Is swapping "acaso" for "arão" ever safe?
Frequency check: "acaso" vs "arão" - which ranks higher?
After this comparison
Done with this confusable. These links stay specific to "acaso" and "arão".
- Full dictionary entry for "acaso" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arão" - compare definitions side by side with the headword page. Word entry
- This pair ranks #34,941 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "acaso" and "arão" also get mixed up with nearby pairs, the highest-scored neighbour is "arão vs atar". 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 #34,941 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.