fusiónvsfusionaWhich spelling fits?

Quick tell: fusión is a noun, fusiona is a verb, so they fill different roles in a sentence.

Which to use

“fusión” is a noun and “fusiona” is a verb - they look or sound alike but fill different roles in a sentence.

#6,412
“fusión” frequency rank
#46,577
“fusiona” frequency rank
52989
confusion score

Side-by-Side Comparison

Feature fusión fusiona
Definition Unión o integración de dos o más elementos. Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del presente de indicativo de fusionar o de fusionarse.

Where the eye mixes fusión and fusiona

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. fusión runs 6 letters (CVCVVC) against fusiona's 7 (CVCVVCV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
fusión
7 ch
fusiona

Why the eye confuses fusión with fusiona

These two trip readers on the page rather than in the ear: fusión is [fuˈsjõn] while fusiona is [fuˈsjona]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 52989, derived from the frequency rank of both members and their visual similarity.

fusión is recorded at frequency rank #6,412, classified as anoun, pronounced [fuˈsjõn]. fusiona is at rank #46,577, tagged as averb, pronounced [fuˈsjona].

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 52989, this pair ranks #90,085 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fusión vs fusiona

Shared letters: finsu. Private to "fusión": ó. Private to "fusiona": ao.

"fusión" · 6 letters · shape CVCVVC  ·  "fusiona" · 7 letters · shape CVCVVCV

Known mistypes of this pair

  • fusiona ← ffusiona · fsuiona · fuciona · fuisona · fusinoa · fusioan · fusionna · fusoina

Frequently Asked Questions

Do "fusión" and "fusiona" mean the same thing in a sentence?
No - they are not even the same part of speech. "fusión" is a noun and "fusiona" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fusión" or "fusiona"?
"fusión" is the more common of the two: it sits at frequency rank #6,412 in our Spanish list, against #46,577 for "fusiona". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "fusión" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fusiona" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #90,085 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "fusión" and "fusiona" also get mixed up with nearby pairs, the highest-scored neighbour is "fusiona vs fusionan". 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 #90,085 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list