boulvsbuConfusable pair

Quick tell: boul is a noun, bu is an adjective, so they fill different roles in a sentence.

Which to use

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

#40,146
“boul” frequency rank
#5,636
“bu” frequency rank
45782
confusion score

Side-by-Side Comparison

Feature boul bu
Definition boulard, fessier, cul, en particulier quand il est gros ou rebondi. 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: boul vs bu

Shared letters muted; letters that set boul and bu apart highlighted. Shared run: 2.

4 ch
boul
2 ch
bu

Role in the sentence - boul and bu

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: boul is anoun and buanadjective. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 45782, derived from the frequency rank of both members and their visual similarity.

boul is recorded at frequency rank #40,146, classified as anoun, pronounced \bul\. 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 45782, this pair ranks #200,090 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of boul vs bu

Shared letters: bu. Private to "boul": lo. Private to "bu": -.

"boul" · 4 letters · shape CVVC  ·  "bu" · 2 letters · shape CV

Known mistypes of this pair

  • boulbboul · bolu · boull · buol · obul

Frequently Asked Questions

Is swapping "boul" for "bu" ever safe?
No - they are not even the same part of speech. "boul" is a noun and "bu" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "boul" or "bu"?
"bu" is the more common of the two: it sits at frequency rank #5,636 in our French list, against #40,146 for "boul". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "boul" and "bu".

  • Full dictionary entry for "boul" 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 #200,090 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "boul" and "bu" also get mixed up with nearby pairs, the highest-scored neighbour is "bold vs boul". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #200,090 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list