FSUvsfuseWhat's the difference?

Quick tell: FSU is a name, fuse is a verb, so they fill different roles in a sentence.

Which to use

“FSU” is a name and “fuse” is a verb - they look or sound alike but fill different roles in a sentence.

#30,171
“FSU” frequency rank
#46,778
“fuse” frequency rank
76949
confusion score

Side-by-Side Comparison

Feature FSU fuse
Definition Fédération française de syndicats de l’enseignement. Première personne du singulier de l’indicatif présent du verbe fuser.

Letter map: FSU vs fuse

Shared letters muted; letters that set FSU and fuse apart highlighted. Shared run: 2.

3 ch
FSU
4 ch
fuse

Part-of-speech tell for FSU / fuse

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: FSU is aname and fuseaverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 76949, derived from the frequency rank of both members and their visual similarity.

FSU is recorded at frequency rank #30,171, classified as aname. fuse is at rank #46,778, tagged as averb, pronounced \fyz\.

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 76949, this pair ranks #29,722 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of FSU vs fuse

Shared letters: fsu. Private to "FSU": -. Private to "fuse": e.

"FSU" · 3 letters · shape CCV  ·  "fuse" · 4 letters · shape CVCV

Known mistypes of this pair

  • fuseffuse · fsue · fues · fusse · ufse

Frequently Asked Questions

Can "FSU" and "fuse" be used interchangeably?
No - they are not even the same part of speech. "FSU" is a name and "fuse" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "FSU" or "fuse"?
"FSU" is the more common of the two: it sits at frequency rank #30,171 in our French list, against #46,778 for "fuse". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "FSU" and "fuse". Here's where to go from here.

  • Full dictionary entry for "FSU" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fuse" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #29,722 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "FSU" and "fuse" also get mixed up with nearby pairs, the highest-scored neighbour is "Fee vs fuse". 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 #29,722 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list