Which to use
“BNF” and “bug” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #23,782
- “BNF” frequency rank
- #9,966
- “bug” frequency rank
- 33748
- confusion score
Side-by-Side Comparison
| Feature | BNF | bug |
|---|---|---|
| Definition | Backus-Naur Form | Dysfonctionnement d’un logiciel ou d’un composant informatique. |
Where the eye mixes BNF and bug
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between BNF and bug
A purely visual mix-up. BNF (\be.ɛn.ɛf\) and bug (\bœɡ\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 33748, derived from the frequency rank of both members and their visual similarity.
BNF is recorded at frequency rank #23,782, classified as anoun, pronounced \be.ɛn.ɛf\. bug is at rank #9,966, tagged as anoun, pronounced \bœɡ\.
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 33748, this pair ranks #288,532 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of BNF vs bug
Shared letters: b. Private to "BNF": fn. Private to "bug": gu.
"BNF" · 3 letters · shape CCC · "bug" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "BNF" for "bug" ever safe?
Which is more common, "BNF" or "bug"?
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 "BNF" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "bug" - compare definitions side by side with the headword page. Word entry
- This pair ranks #288,532 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "BNF" and "bug" also get mixed up with nearby pairs, the highest-scored neighbour is "ber vs BNF". Nearby pair
Confusion rank #288,532 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.