novsnonTell them apart

Quick tell: no is a adverb, non is a noun, so they fill different roles in a sentence.

Which to use

“no” is an adverb and “non” is a noun - they look or sound alike but fill different roles in a sentence.

#9
“no” frequency rank
#9,501
“non” frequency rank
9510
confusion score

Side-by-Side Comparison

Feature no non
Definition Adverbio de negación, respondiendo a una pregunta. Dícese del número no divisible por dos.

Where the eye mixes no and non

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

2 ch
no
3 ch
non

Visual trap between no and non

These two trip readers on the page rather than in the ear: no is [ˈno] while non is [ˈnõn]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “no” sits inside “non”, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 9510, derived from the frequency rank of both members and their visual similarity.

no is recorded at frequency rank #9, classified as anadv, pronounced [ˈno]. non is at rank #9,501, tagged as anoun, pronounced [ˈnõn].

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 9510, this pair ranks #301,716 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of no vs non

Shared letters: no. Private to "no": -. Private to "non": -.

"no" · 2 letters · shape CV  ·  "non" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "no" for "non" ever safe?
No - they are not even the same part of speech. "no" is an adverb and "non" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "no" vs "non" - which ranks higher?
"no" is the more common of the two: it sits at frequency rank #9 in our Spanish list, against #9,501 for "non". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "no" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "non" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #301,716 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "no" and "non" also get mixed up with nearby pairs, the highest-scored neighbour is "non vs nox". Nearby pair

Confusion rank #301,716 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