uniónvsuniráConfusable pair

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

Which to use

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

#904
“unión” frequency rank
#22,223
“unirá” frequency rank
23127
confusion score

Side-by-Side Comparison

Feature unión unirá
Definition Acción y efecto de unir o unirse. Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del futuro de indicativo de unir o de unirse.

Where the eye mixes unión and unirá

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. unión (VCVVC) and unirá (VCVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

5 ch
unión
5 ch
unirá

Look-alike desk: unión vs unirá

These two trip readers on the page rather than in the ear: unión is [uˈnjõn] while unirá is [uniˈɾa]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 23127, derived from the frequency rank of both members and their visual similarity.

unión is recorded at frequency rank #904, classified as anoun, pronounced [uˈnjõn]. unirá is at rank #22,223, tagged as averb, pronounced [uniˈɾa].

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 23127, this pair ranks #247,254 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of unión vs unirá

Shared letters: inu. Private to "unión": ó. Private to "unirá": rá.

"unión" · 5 letters · shape VCVVC  ·  "unirá" · 5 letters · shape VCVCV

Frequently Asked Questions

Do "unión" and "unirá" mean the same thing in a sentence?
No - they are not even the same part of speech. "unión" is a noun and "unirá" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "unión" or "unirá" show up more?
"unión" is the more common of the two: it sits at frequency rank #904 in our Spanish list, against #22,223 for "unirá". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "unión" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "unirá" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #247,254 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "unión" and "unirá" also get mixed up with nearby pairs, the highest-scored neighbour is "unirá vs usina". Nearby pair

Confusion rank #247,254 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