función vs fusión, What's the Difference?

Which to use

“función” and “fusión” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#1,196
“función” frequency rank: #6,412
“fusión” frequency rank: 7608
confusion score

Side-by-Side Comparison

Feature	función	fusión
Definition	Propósito de algo, uso de algo.	Unión o integración de dos o más elementos.

Where the eye mixes función and fusión

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

7 ch

función

6 ch

fusión

Visual trap between función and fusión

A purely visual mix-up. función ([fũnˈsjõn]) and fusión ([fuˈsjõn]) 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 7608, derived from the frequency rank of both members and their visual similarity.

función is recorded at frequency rank #1,196, classified as anoun, pronounced [fũnˈsjõn]. fusión is at rank #6,412, tagged as anoun, pronounced [fuˈsjõn].

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 7608, this pair ranks #307,490 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of función vs fusión

Shared letters: finuó. Private to "función": c. Private to "fusión": s.

"función" · 7 letters · shape CVCCVVC · "fusión" · 6 letters · shape CVCVVC

Frequently Asked Questions

Is swapping "función" for "fusión" ever safe?

No. They are said differently ([fũnˈsjõn] versus [fuˈsjõn]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Frequency check: "función" vs "fusión" - which ranks higher?

"función" is the more common of the two: it sits at frequency rank #1,196 in our Spanish list, against #6,412 for "fusión". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

Full dictionary entry for "función" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "fusión" - compare definitions side by side with the headword page. Word entry
This pair ranks #307,490 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
"función" and "fusión" also get mixed up with nearby pairs, the highest-scored neighbour is "fusión vs fusionan". Nearby pair

Confusion rank #307,490 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.