Which to use
“fra” is a noun and “FSB” is a name - they look or sound alike but fill different roles in a sentence.
- #14,045
- “fra” frequency rank
- #45,626
- “FSB” frequency rank
- 59671
- confusion score
Side-by-Side Comparison
| Feature | fra | FSB |
|---|---|---|
| Definition | Frère. | Service de renseignement de la Russie chargé des affaires de sécurité intérieure, successeur du service de la sécurité intérieure du KGB. |
Letter map: fra vs FSB
Shared letters muted; letters that set fra and FSB apart highlighted. Shared run: 1.
Part-of-speech tell for fra / FSB
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: fra is anoun and FSBaname. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 59671, derived from the frequency rank of both members and their visual similarity.
fra is recorded at frequency rank #14,045, classified as anoun. FSB is at rank #45,626, tagged as aname, pronounced \ɛf.ɛs.be\.
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 59671, this pair ranks #101,826 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of fra vs FSB
Shared letters: f. Private to "fra": ar. Private to "FSB": bs.
"fra" · 3 letters · shape CCV · "FSB" · 3 letters · shape CCC
Frequently Asked Questions
Do "fra" and "FSB" mean the same thing in a sentence?
Which is more common, "fra" or "FSB"?
What to do next
You've compared "fra" and "FSB". Here's where to go from here.
- Full dictionary entry for "fra" 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 #101,826 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "fra" and "FSB" also get mixed up with nearby pairs, the highest-scored neighbour is "Fee vs FSB". Nearby pair
Confusion rank #101,826 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.