novavsnoxTell them apart

Which to use

“nova” and “nox” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#12,660
“nova” frequency rank
#49,823
“nox” frequency rank
62483
confusion score

Side-by-Side Comparison

Feature nova nox
Definition Estrella que se vuelve extremadamente brillante para unos pocos días por una explosión termonuclear en la superficie. Noche.

Where the eye mixes nova and nox

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
nova
3 ch
nox

Why the eye confuses nova with nox

A purely visual mix-up. nova ([ˈnoβ̞a]) and nox (/ˈnoks/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 62483, derived from the frequency rank of both members and their visual similarity.

nova is recorded at frequency rank #12,660, classified as anoun, pronounced [ˈnoβ̞a]. nox is at rank #49,823, tagged as anoun, pronounced /ˈnoks/.

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 62483, this pair ranks #51,880 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of nova vs nox

Shared letters: no. Private to "nova": av. Private to "nox": x.

"nova" · 4 letters · shape CVCV  ·  "nox" · 3 letters · shape CVC

Known mistypes of this pair

  • novannova · noav · noba · novva · nvoa · onva

Frequently Asked Questions

Is swapping "nova" for "nox" ever safe?
No. They are said differently ([ˈnoβ̞a] versus /ˈnoks/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "nova" or "nox" show up more?
"nova" is the more common of the two: it sits at frequency rank #12,660 in our Spanish list, against #49,823 for "nox". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "nova" and "nox" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "nova" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "nox" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #51,880 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "nova" and "nox" also get mixed up with nearby pairs, the highest-scored neighbour is "nox vs nui". 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 #51,880 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list