B vs bu, What's the Difference?

Which to use

“B” is a character and “bu” is an adjective - they look or sound alike but fill different roles in a sentence.

#666
“B” frequency rank: #5,636
“bu” frequency rank: 6302
confusion score

Side-by-Side Comparison

Feature	B	bu
Definition	Deuxième lettre et première consonne de l’alphabet latin (en majuscule).	Absorbé, en parlant d’un liquide ou de sentiment (les sentiments étaient autrefois considérés comme des humeurs, au sens propre de quelque chose d’humide).

Letter map: B vs bu

Shared letters muted; letters that set B and bu apart highlighted. Shared run: 1.

1 ch

2 ch

Role in the sentence - B and bu

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: B is acharacter and buanadjective. On the page they differ by 1 extra letter(s) - “B” sits inside “bu”. Our composite confusion score for this pair is 6302, derived from the frequency rank of both members and their visual similarity.

B is recorded at frequency rank #666, classified as acharacter, pronounced \be\. bu is at rank #5,636, tagged as anadj.

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 6302, this pair ranks #426,614 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of B vs bu

Shared letters: b. Private to "B": -. Private to "bu": u.

"B" · 1 letters · shape C · "bu" · 2 letters · shape CV

Frequently Asked Questions

Is swapping "B" for "bu" ever safe?

No - they are not even the same part of speech. "B" is a character and "bu" an adjective, so a sentence built for one is usually ungrammatical with the other.

In ordinary French text, does "B" or "bu" show up more?

"B" is the more common of the two: it sits at frequency rank #666 in our French list, against #5,636 for "bu". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "B" vs "bu" is on the table, pick a follow-up below.

Full dictionary entry for "B" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "bu" - compare definitions side by side with the headword page. Word entry
This pair ranks #426,614 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"B" and "bu" also get mixed up with nearby pairs, the highest-scored neighbour is "bu vs bury". Nearby pair

Confusion rank #426,614 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.