BfSvsblasWhich spelling fits?

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

Which to use

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

#48,780
“BfS” frequency rank
#32,964
“blas” frequency rank
81744
confusion score

Side-by-Side Comparison

Feature BfS blas
Definition Bundesamt für Strahlenschutz 2. Person Singular Imperativ Präsens Aktiv des Verbs blasen

Letter map: BfS vs blas

Shared letters muted; letters that set BfS and blas apart highlighted. Shared run: 2. BfS runs 3 letters (CCC) against blas's 4 (CCVC) - the length gap alone is often enough to separate them once you know to check it.

3 ch
BfS
4 ch
blas

Part-of-speech tell for BfS / blas

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: BfS is anabbrev and blasaverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 81744, derived from the frequency rank of both members and their visual similarity.

BfS is recorded at frequency rank #48,780, classified as anabbrev, pronounced […]. blas is at rank #32,964, tagged as averb, pronounced [blaːs].

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 81744, this pair ranks #169,979 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of BfS vs blas

Shared letters: bs. Private to "BfS": f. Private to "blas": al.

"BfS" · 3 letters · shape CCC  ·  "blas" · 4 letters · shape CCVC

Known mistypes of this pair

  • blas ← bblas · bllas · blsa · lbas

Frequently Asked Questions

Do "BfS" and "blas" mean the same thing in a sentence?
No - they are not even the same part of speech. "BfS" is an abbrev and "blas" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "BfS" or "blas"?
"blas" is the more common of the two: it sits at frequency rank #32,964 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.

Useful next steps

Done with this confusable. These links stay specific to "BfS" and "blas".

  • Full dictionary entry for "BfS" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "blas" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #169,979 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "BfS" and "blas" also get mixed up with nearby pairs, the highest-scored neighbour is "BfS vs puzzles". 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 #169,979 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