Which to use
“núcleo” is a noun and “nulo” is an adjective - they look or sound alike but fill different roles in a sentence.
- #4,732
- “núcleo” frequency rank
- #11,460
- “nulo” frequency rank
- 16192
- confusion score
Side-by-Side Comparison
| Feature | núcleo | nulo |
|---|---|---|
| Definition | Lo que está en el medio de algo, parte central o medular. | Sin fuerza jurídica, sin valor para obligar a hacer algo, carente de efecto, por no cumplir con las leyes o por poseer un vicio en las formalidades requeridas. |
Where the spellings diverge
Shared letters are muted; the letters that actually set núcleo and nulo apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: núcleo is [ˈnukleo] while nulo is [ˈnulo]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 16192, derived from the frequency rank of both members and their visual similarity.
núcleo is recorded at frequency rank #4,732, classified as anoun, pronounced [ˈnukleo]. nulo is at rank #11,460, tagged as anadj, pronounced [ˈnulo].
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 16192, this pair ranks #277,145 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
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
Frequency comparison
Frequently Asked Questions
Can "núcleo" and "nulo" be used interchangeably?
Which is more common, "núcleo" or "nulo"?
Remembering núcleo vs nulo
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “núcleo”; for an adjective, it's “nulo”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “núcleo” entry
- Browse more pairs most likely to be confused. Most confusable