fusãovsfusoTell them apart

Which to use

“fusão” and “fuso” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#6,886
“fusão” frequency rank
#20,614
“fuso” frequency rank
27500
confusion score

Side-by-Side Comparison

Feature fusão fuso
Definition o fato de fundir seção de superfície esférica compreendida entre dois semi-círculos de uma esfera

Where the eye mixes fusão and fuso

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. fusão runs 5 letters (CVCVV) against fuso's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
fusão
4 ch
fuso

Why the eye confuses fusão with fuso

A purely visual mix-up. fusão (/fu.ˈzɐ̃w̃/) and fuso (/ˈfu.zu/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 27500, derived from the frequency rank of both members and their visual similarity.

fusão is recorded at frequency rank #6,886, classified as anoun, pronounced /fu.ˈzɐ̃w̃/. fuso is at rank #20,614, tagged as anoun, pronounced /ˈfu.zu/.

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 27500, this pair ranks #41,451 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fusão vs fuso

Shared letters: fosu. Private to "fusão": ã. Private to "fuso": -.

"fusão" · 5 letters · shape CVCVV  ·  "fuso" · 4 letters · shape CVCV

Known mistypes of this pair

  • fuso ← ffuso · fsuo · fuos · fusso · ufso

Frequently Asked Questions

Is swapping "fusão" for "fuso" ever safe?
No. They are said differently (/fu.ˈzɐ̃w̃/ versus /ˈfu.zu/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Portuguese text, does "fusão" or "fuso" show up more?
"fusão" is the more common of the two: it sits at frequency rank #6,886 in our Portuguese list, against #20,614 for "fuso". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "fusão" and "fuso" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "fusão" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fuso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #41,451 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "fusão" and "fuso" also get mixed up with nearby pairs, the highest-scored neighbour is "fosco vs fuso". 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 #41,451 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list