Which to use
“oco” is an adjective and “omo” is a noun - they look or sound alike but fill different roles in a sentence.
- #27,951
- “oco” frequency rank
- #40,711
- “omo” frequency rank
- 68662
- confusion score
Side-by-Side Comparison
| Feature | oco | omo |
|---|---|---|
| Definition | que não tem miolo | ohm, unidade de medida de resistência elétrica no Sistema Internacional de Unidades (SI) |
Where the eye mixes oco and omo
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. oco and omo follow the identical consonant-vowel pattern (VCV). Same shape at a glance is often the real trap, independent of shared letters.
Visual trap between oco and omo
These two trip readers on the page rather than in the ear: oco is /ˈo.ku/ while omo is /ˈo.mo/, /ˈɔ.mɔ/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - c in “oco” becomes m in “omo”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 68662, 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/. omo is at rank #40,711, tagged as anoun, pronounced /ˈo.mo/, /ˈɔ.mɔ/.
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 68662, this pair ranks #4,205 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of oco vs omo
Shared letters: o. Private to "oco": c. Private to "omo": m.
"oco" · 3 letters · shape VCV · "omo" · 3 letters · shape VCV
Frequently Asked Questions
Can "oco" and "omo" be used interchangeably?
In ordinary Portuguese text, does "oco" or "omo" show up more?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "oco" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "omo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #4,205 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "oco" and "omo" also get mixed up with nearby pairs, the highest-scored neighbour is "omo vs oni". Nearby pair
Confusion rank #4,205 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.