usarvsusoConfusable pair

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

Which to use

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

#649
“usar” frequency rank
#349
“uso” frequency rank
998
confusion score

Side-by-Side Comparison

Feature usar uso
Definition Emplear algo con un fin determinado, servirse de un objeto para realizar una acción con él. Acción o efecto de usar o de usarse.

Where the eye mixes usar and uso

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
usar
3 ch
uso

Look-alike desk: usar vs uso

These two trip readers on the page rather than in the ear: usar is [uˈsaɾ] while uso is [ˈuso]. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 998, derived from the frequency rank of both members and their visual similarity.

usar is recorded at frequency rank #649, classified as averb, pronounced [uˈsaɾ]. uso is at rank #349, tagged as anoun, pronounced [ˈuso].

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 998, this pair ranks #322,702 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of usar vs uso

Shared letters: su. Private to "usar": ar. Private to "uso": o.

"usar" · 4 letters · shape VCVC  ·  "uso" · 3 letters · shape VCV

Known mistypes of this pair

  • usarsuar · uasr · usarr · usra · ussar

Frequently Asked Questions

Is swapping "usar" for "uso" ever safe?
No - they are not even the same part of speech. "usar" is a verb and "uso" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "usar" or "uso" show up more?
"uso" is the more common of the two: it sits at frequency rank #349 in our Spanish list, against #649 for "usar". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "usar" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "uso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #322,702 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "usar" and "uso" also get mixed up with nearby pairs, the highest-scored neighbour is "UPN vs uso". 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 #322,702 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