BfSvsbuTell them apart

Quick tell: BfS is a abbrev, bu is a verb, so they fill different roles in a sentence.

Which to use

“BfS” is an abbrev and “bu” is a verb - they look or sound alike but fill different roles in a sentence.

#48,780
“BfS” frequency rank
#15,054
“bu” frequency rank
63834
confusion score

Side-by-Side Comparison

Feature BfS bu
Definition Bundesamt für Strahlenschutz Partizip Perfekt Maskulinum Singular des Verbs boire

Letter map: BfS vs bu

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

3 ch
BfS
2 ch
bu

Grammar separator: BfS vs bu

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: BfS is anabbrev and buaverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 63834, derived from the frequency rank of both members and their visual similarity.

BfS is recorded at frequency rank #48,780, classified as anabbrev, pronounced […]. bu is at rank #15,054, tagged as averb, pronounced [by].

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 63834, this pair ranks #662,673 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of BfS vs bu

Shared letters: b. Private to "BfS": fs. Private to "bu": u.

"BfS" · 3 letters · shape CCC  ·  "bu" · 2 letters · shape CV

Frequently Asked Questions

Do "BfS" and "bu" mean the same thing in a sentence?
No - they are not even the same part of speech. "BfS" is an abbrev and "bu" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "BfS" or "bu" show up more?
"bu" is the more common of the two: it sits at frequency rank #15,054 in our German list, against #48,780 for "BfS". 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 "BfS" and "bu".

  • Full dictionary entry for "BfS" 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 #662,673 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "BfS" and "bu" also get mixed up with nearby pairs, the highest-scored neighbour is "BfS vs puzzles". Nearby pair

Confusion rank #662,673 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list