oco vs ok, What's the Difference?

Which to use

“oco” is an adjective and “ok” is a num - they look or sound alike but fill different roles in a sentence.

#27,951
“oco” frequency rank: #1,033
“ok” frequency rank: 28984
confusion score

Side-by-Side Comparison

Feature	oco	ok
Definition	que não tem miolo	oito

Letter map: oco vs ok

Shared letters muted; letters that set oco and ok apart highlighted. Shared run: 1.

3 ch

oco

2 ch

Role in the sentence - oco and ok

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: oco is anadjective and okanum. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 28984, 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/. ok is at rank #1,033, tagged as anum.

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 28984, this pair ranks #39,756 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of oco vs ok

Shared letters: o. Private to "oco": c. Private to "ok": k.

"oco" · 3 letters · shape VCV · "ok" · 2 letters · shape VC

Frequently Asked Questions

Is swapping "oco" for "ok" ever safe?

No - they are not even the same part of speech. "oco" is an adjective and "ok" a num, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "oco" vs "ok" - which ranks higher?

"ok" is the more common of the two: it sits at frequency rank #1,033 in our Portuguese list, against #27,951 for "oco". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "oco" and "ok". Here's where to go from here.

Full dictionary entry for "oco" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ok" - compare definitions side by side with the headword page. Word entry
This pair ranks #39,756 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"oco" and "ok" also get mixed up with nearby pairs, the highest-scored neighbour is "oco vs oni". Nearby pair

Confusion rank #39,756 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.