Which to use
“oco” is an adjective and “oni” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #27,951
- “oco” frequency rank
- #49,618
- “oni” frequency rank
- 77569
- confusion score
Side-by-Side Comparison
| Feature | oco | oni |
|---|---|---|
| Definition | que não tem miolo | pronome pessoal do caso nominativo da terceira pessoa do plural de gênero masculino pessoal, eles |
Letter map: oco vs oni
Shared letters muted; letters that set oco and oni apart highlighted. Shared run: 1. oco and oni follow the identical consonant-vowel pattern (VCV). Same shape at a glance is often the real trap, independent of shared letters.
Role in the sentence - oco and oni
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: oco is anadjective and oniapronoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 77569, derived from the frequency rank of both members and their visual similarity.
oco is recorded at frequency rank #27,951, classified as anadj, pronounced /ˈo.ku/. oni is at rank #49,618, 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 77569, this pair ranks #1,850 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of oco vs oni
Shared letters: o. Private to "oco": c. Private to "oni": in.
"oco" · 3 letters · shape VCV · "oni" · 3 letters · shape VCV
Frequently Asked Questions
Is swapping "oco" for "oni" ever safe?
Frequency check: "oco" vs "oni" - which ranks higher?
After this comparison
Pair "oco" vs "oni" is on the table, pick a follow-up below.
- Full dictionary entry for "oco" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "oni" - compare definitions side by side with the headword page. Word entry
- This pair ranks #1,850 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "oco" and "oni" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs ons". Nearby pair
Confusion rank #1,850 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.