og vs ono, What's the Difference?

Which to use

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

#36,138
“og” frequency rank: #37,444
“ono” frequency rank: 73582
confusion score

Side-by-Side Comparison

Feature	og	ono
Definition	e:	pronome pessoal neutro do caso nominativo da terceira pessoa do singular

Letter map: og vs ono

Shared letters muted; letters that set og and ono apart highlighted. Shared run: 1. og runs 2 letters (VC) against ono's 3 (VCV) - the length gap alone is often enough to separate them once you know to check it.

2 ch

3 ch

ono

Grammar separator: og vs ono

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: og is aconjunction and onoapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 73582, derived from the frequency rank of both members and their visual similarity.

og is recorded at frequency rank #36,138, classified as aconj, pronounced /ɔ/. 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 73582, this pair ranks #2,737 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of og vs ono

Shared letters: o. Private to "og": g. Private to "ono": n.

"og" · 2 letters · shape VC · "ono" · 3 letters · shape VCV

Frequently Asked Questions

Is swapping "og" for "ono" ever safe?

No - they are not even the same part of speech. "og" is a conjunction and "ono" a pronoun, so a sentence built for one is usually ungrammatical with the other.

In ordinary Portuguese text, does "og" or "ono" show up more?

"og" is the more common of the two: it sits at frequency rank #36,138 in our Portuguese list, against #37,444 for "ono". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "og" vs "ono" is on the table, pick a follow-up below.

Full dictionary entry for "og" 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 #2,737 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"og" and "ono" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs ono". Nearby pair

Confusion rank #2,737 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.