nocivavsnovaTell them apart

Quick tell: nociva is a adjective, nova is a noun, so they fill different roles in a sentence.

Which to use

“nociva” is an adjective and “nova” is a noun - they look or sound alike but fill different roles in a sentence.

#40,976
“nociva” frequency rank
#12,660
“nova” frequency rank
53636
confusion score

Side-by-Side Comparison

Feature nociva nova
Definition Forma del femenino de nocivo. Estrella que se vuelve extremadamente brillante para unos pocos días por una explosión termonuclear en la superficie.

Where the eye mixes nociva and nova

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
nociva
4 ch
nova

Why the eye confuses nociva with nova

These two trip readers on the page rather than in the ear: nociva is [noˈsiβ̞a] while nova is [ˈnoβ̞a]. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 53636, derived from the frequency rank of both members and their visual similarity.

nociva is recorded at frequency rank #40,976, classified as anadj, pronounced [noˈsiβ̞a]. nova is at rank #12,660, tagged as anoun, pronounced [ˈnoβ̞a].

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 53636, this pair ranks #86,930 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of nociva vs nova

Shared letters: anov. Private to "nociva": ci. Private to "nova": -.

"nociva" · 6 letters · shape CVCVCV  ·  "nova" · 4 letters · shape CVCV

Known mistypes of this pair

  • nocivancoiva · nnociva · nocciva · nociav · nociba · nocivva · nocvia · noicva
  • novannova · noav · noba · novva · nvoa · onva

Frequently Asked Questions

Can "nociva" and "nova" be used interchangeably?
No - they are not even the same part of speech. "nociva" is an adjective and "nova" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "nociva" or "nova" show up more?
"nova" is the more common of the two: it sits at frequency rank #12,660 in our Spanish list, against #40,976 for "nociva". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "nociva" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "nova" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #86,930 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "nociva" and "nova" also get mixed up with nearby pairs, the highest-scored neighbour is "necia vs nociva". 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 #86,930 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