Fos vs fra, What's the Difference?

Which to use

“Fos” is a name and “fra” is a noun - they look or sound alike but fill different roles in a sentence.

#33,268
“Fos” frequency rank: #14,045
“fra” frequency rank: 47313
confusion score

Side-by-Side Comparison

Feature	Fos	fra
Definition	Commune française, située dans le département de la Haute-Garonne.	Frère.

Letter map: Fos vs fra

Shared letters muted; letters that set Fos and fra apart highlighted. Shared run: 1.

3 ch

Fos

3 ch

fra

Grammar separator: Fos vs fra

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Fos is aname and fraanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 47313, derived from the frequency rank of both members and their visual similarity.

Fos is recorded at frequency rank #33,268, classified as aname. fra is at rank #14,045, tagged as anoun.

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 47313, this pair ranks #187,939 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Fos vs fra

Shared letters: f. Private to "Fos": os. Private to "fra": ar.

"Fos" · 3 letters · shape CVC · "fra" · 3 letters · shape CCV

Frequently Asked Questions

Do "Fos" and "fra" mean the same thing in a sentence?

No - they are not even the same part of speech. "Fos" is a name and "fra" a noun, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "Fos" vs "fra" - which ranks higher?

"fra" is the more common of the two: it sits at frequency rank #14,045 in our French list, against #33,268 for "Fos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "Fos" and "fra". Here's where to go from here.

Full dictionary entry for "Fos" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "fra" - compare definitions side by side with the headword page. Word entry
This pair ranks #187,939 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"Fos" and "fra" also get mixed up with nearby pairs, the highest-scored neighbour is "Fee vs Fos". Nearby pair

Confusion rank #187,939 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.