Which to use
“núcleo” is a noun and “nulo” is an adjective - they look or sound alike but fill different roles in a sentence.
- #3,029
- “núcleo” frequency rank
- #18,400
- “nulo” frequency rank
- 21429
- confusion score
Side-by-Side Comparison
| Feature | núcleo | nulo |
|---|---|---|
| Definition | miolo da noz, avelã, amêndoa, pinhão ou de outras frutas | que não existe |
Letter map: núcleo vs nulo
Shared letters muted; letters that set núcleo and nulo apart highlighted. Shared run: 3. núcleo runs 6 letters (CVCCVV) against nulo's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: núcleo vs nulo
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: núcleo is anoun and nuloanadjective. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 21429, derived from the frequency rank of both members and their visual similarity.
núcleo is recorded at frequency rank #3,029, classified as anoun. nulo is at rank #18,400, tagged as anadj, pronounced /ˈnu.lu/.
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 21429, this pair ranks #48,838 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of núcleo vs nulo
Shared letters: lno. Private to "núcleo": ceú. Private to "nulo": u.
"núcleo" · 6 letters · shape CVCCVV · "nulo" · 4 letters · shape CVCV
Known mistypes of this pair
- nulo ← nluo · nnulo · nullo · nuol · unlo
Frequently Asked Questions
Can "núcleo" and "nulo" be used interchangeably?
Which is more common, "núcleo" or "nulo"?
Useful next steps
Done with this confusable. These links stay specific to "núcleo" and "nulo".
- Full dictionary entry for "núcleo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "nulo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #48,838 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "núcleo" and "nulo" also get mixed up with nearby pairs, the highest-scored neighbour is "null vs nulo". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #48,838 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.