Which to use
“NBC” is an adjective and “nis” is a verb - they look or sound alike but fill different roles in a sentence.
- #19,349
- “NBC” frequency rank
- #49,821
- “nis” frequency rank
- 69170
- confusion score
Side-by-Side Comparison
| Feature | NBC | nis |
|---|---|---|
| Definition | Qualifie les trois grands risques encourus avec les armes de destruction massive : le nucléaire, la biologie et la chimie. | Participe actif présent du verbe ní (« se déplacer »). |
Where the eye mixes NBC and nis
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. NBC (CCC) and nis (CVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses NBC with nis
These two trip readers on the page rather than in the ear: NBC is \ɛn.be.se\ while nis is \nis\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 69170, derived from the frequency rank of both members and their visual similarity.
NBC is recorded at frequency rank #19,349, classified as anadj, pronounced \ɛn.be.se\. nis is at rank #49,821, tagged as averb, pronounced \nis\.
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 69170, this pair ranks #56,198 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of NBC vs nis
Shared letters: n. Private to "NBC": bc. Private to "nis": is.
"NBC" · 3 letters · shape CCC · "nis" · 3 letters · shape CVC
Frequently Asked Questions
Can "NBC" and "nis" be used interchangeably?
Frequency check: "NBC" vs "nis" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "NBC" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "nis" - compare definitions side by side with the headword page. Word entry
- This pair ranks #56,198 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "NBC" and "nis" also get mixed up with nearby pairs, the highest-scored neighbour is "nis vs nop". Nearby pair
Confusion rank #56,198 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.