Which to use
“unieron” is a verb and “unión” is a noun - they look or sound alike but fill different roles in a sentence.
- #9,555
- “unieron” frequency rank
- #904
- “unión” frequency rank
- 10459
- confusion score
Side-by-Side Comparison
| Feature | unieron | unión |
|---|---|---|
| Definition | Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del pretérito perfecto simple de indicativo de unir o de unirse. | Acción y efecto de unir o unirse. |
Where the eye mixes unieron and unión
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. unieron runs 7 letters (VCVVCVC) against unión's 5 (VCVVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between unieron and unión
These two trip readers on the page rather than in the ear: unieron is [uˈnjeɾõn] while unión is [uˈnjõn]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 10459, derived from the frequency rank of both members and their visual similarity.
unieron is recorded at frequency rank #9,555, classified as averb, pronounced [uˈnjeɾõn]. unión is at rank #904, tagged as anoun, pronounced [uˈnjõn].
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 10459, this pair ranks #298,536 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of unieron vs unión
Shared letters: inu. Private to "unieron": eor. Private to "unión": ó.
"unieron" · 7 letters · shape VCVVCVC · "unión" · 5 letters · shape VCVVC
Known mistypes of this pair
- unieron ← nuieron · uineron · uneiron · unieorn · unierno · unieronn · unierron · unireon
Frequently Asked Questions
Is swapping "unieron" for "unión" ever safe?
In ordinary Spanish text, does "unieron" or "unión" show up more?
Useful next steps
Eye-level mix-up between "unieron" and "unión" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "unieron" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "unión" - compare definitions side by side with the headword page. Word entry
- This pair ranks #298,536 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "unieron" and "unión" also get mixed up with nearby pairs, the highest-scored neighbour is "unieran vs unieron". 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 #298,536 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.