Which to use
“Fax” and “FSB” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #12,705
- “Fax” frequency rank
- #41,175
- “FSB” frequency rank
- 53880
- confusion score
Side-by-Side Comparison
| Feature | Fax | FSB |
|---|---|---|
| Definition | per Telefonleitung übermitteltes Dokument, Schriftstück, Foto oder Zeichnung | russischer Inlandsgeheimdienst und Geheimpolizei |
Where the eye mixes Fax and FSB
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses Fax with FSB
A purely visual mix-up. Fax ([faks]) and FSB ([ɛfʔɛsˈbeː]) 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 53880, derived from the frequency rank of both members and their visual similarity.
Fax is recorded at frequency rank #12,705, classified as anoun, pronounced [faks]. FSB is at rank #41,175, tagged as anoun, pronounced [ɛfʔɛsˈbeː].
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 53880, this pair ranks #1,040,751 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Fax vs FSB
Shared letters: f. Private to "Fax": ax. Private to "FSB": bs.
"Fax" · 3 letters · shape CVC · "FSB" · 3 letters · shape CCC
Frequently Asked Questions
Do "Fax" and "FSB" mean the same thing in a sentence?
Which is more common, "Fax" or "FSB"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "Fax" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "FSB" - compare definitions side by side with the headword page. Word entry
- This pair ranks #1,040,751 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "Fax" and "FSB" also get mixed up with nearby pairs, the highest-scored neighbour is "fist vs FSB". Nearby pair
Confusion rank #1,040,751 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.