Which to use
“NCO” and “nox” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #44,957
- “NCO” frequency rank
- #34,207
- “nox” frequency rank
- 79164
- confusion score
Side-by-Side Comparison
| Feature | NCO | nox |
|---|---|---|
| Definition | Initialism of numerically controlled oscillator. | The period of darkness in each twenty-four hours; a night. |
Letter map: NCO vs nox
Shared letters muted; letters that set NCO and nox apart highlighted. Shared run: 2.
Spelling & dictionary notes on NCO vs nox
NCO and nox are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 79164, derived from the frequency rank of both members and their visual similarity.
NCO is recorded at frequency rank #44,957, classified as anoun. nox is at rank #34,207, tagged as anoun.
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 79164, this pair ranks #22,765 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of NCO vs nox
Shared letters: no. Private to "NCO": c. Private to "nox": x.
"NCO" · 3 letters · shape CCV · "nox" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "NCO" for "nox" ever safe?
In ordinary English text, does "NCO" or "nox" show up more?
What to do next
Pair "NCO" vs "nox" is on the table, pick a follow-up below.
- Full dictionary entry for "NCO" 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 #22,765 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "NCO" and "nox" also get mixed up with nearby pairs, the highest-scored neighbour is "NCO vs NPL". Nearby pair
Confusion rank #22,765 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.