óleovsonoTell them apart

Quick tell: óleo is a noun, ono is a pronoun, so they fill different roles in a sentence.

Which to use

“óleo” is a noun and “ono” is a pronoun - they look or sound alike but fill different roles in a sentence.

#2,919
“óleo” frequency rank
#37,444
“ono” frequency rank
40363
confusion score

Side-by-Side Comparison

Feature óleo ono
Definition substância viscosa que não se mistura com a água pronome pessoal neutro do caso nominativo da terceira pessoa do singular

Letter map: óleo vs ono

Shared letters muted; letters that set óleo and ono apart highlighted. Shared run: 1.

4 ch
óleo
3 ch
ono

Role in the sentence - óleo and ono

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: óleo is anoun and onoapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 40363, derived from the frequency rank of both members and their visual similarity.

óleo is recorded at frequency rank #2,919, classified as anoun. ono is at rank #37,444, 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 40363, this pair ranks #25,760 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of óleo vs ono

Shared letters: o. Private to "óleo": eló. Private to "ono": n.

"óleo" · 4 letters · shape VCVV  ·  "ono" · 3 letters · shape VCV

Frequently Asked Questions

Do "óleo" and "ono" mean the same thing in a sentence?
No - they are not even the same part of speech. "óleo" is a noun and "ono" a pronoun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "óleo" or "ono" show up more?
"óleo" is the more common of the two: it sits at frequency rank #2,919 in our Portuguese list, against #37,444 for "ono". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "óleo" and "ono".

  • Full dictionary entry for "óleo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ono" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #25,760 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "óleo" and "ono" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs ono". Nearby pair

Confusion rank #25,760 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list