Which to use
“omo” is a noun and “os” is an article - they look or sound alike but fill different roles in a sentence.
- #40,711
- “omo” frequency rank
- #19
- “os” frequency rank
- 40730
- confusion score
Side-by-Side Comparison
| Feature | omo | os |
|---|---|---|
| Definition | ohm, unidade de medida de resistência elétrica no Sistema Internacional de Unidades (SI) | usado para apontar um nome definido, único |
Where the eye mixes omo and os
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between omo and os
These two trip readers on the page rather than in the ear: omo is /ˈo.mo/, /ˈɔ.mɔ/ while os is /uʃ/, /us/ (menos frequente); enfático: /oʃ/, /os/ (menos frequente). Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs article), which is usually the fastest check. Our composite confusion score for this pair is 40730, derived from the frequency rank of both members and their visual similarity.
omo is recorded at frequency rank #40,711, classified as anoun, pronounced /ˈo.mo/, /ˈɔ.mɔ/. os is at rank #19, tagged as anarticle, pronounced /uʃ/, /us/ (menos frequente); enfático: /oʃ/, /os/ (menos frequente).
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 40730, this pair ranks #25,328 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of omo vs os
Shared letters: o. Private to "omo": m. Private to "os": s.
"omo" · 3 letters · shape VCV · "os" · 2 letters · shape VC
Frequently Asked Questions
Can "omo" and "os" be used interchangeably?
Which is more common, "omo" or "os"?
After this comparison
Eye-level mix-up between "omo" and "os" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "omo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "os" - compare definitions side by side with the headword page. Word entry
- This pair ranks #25,328 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "omo" and "os" also get mixed up with nearby pairs, the highest-scored neighbour is "omo vs oni". Nearby pair
Confusion rank #25,328 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.