posovsproConfusable pair

Quick tell: poso is a noun, pro is a preposition, so they fill different roles in a sentence.

Which to use

“poso” is a noun and “pro” is a preposition - they look or sound alike but fill different roles in a sentence.

#46,740
“poso” frequency rank
#1,421
“pro” frequency rank
48161
confusion score

Side-by-Side Comparison

Feature poso pro
Definition Sólidos que estaban diluidos en un líquido y por la acción de la gravedad se depositan en el fondo del recipiente que lo contiene al líquido. Úsase para indicar el beneficiario de una acción o iniciativa.

Where the eye mixes poso and pro

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

4 ch
poso
3 ch
pro

Look-alike desk: poso vs pro

These two trip readers on the page rather than in the ear: poso is [ˈposo] while pro is [ˈpɾo]. 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 preposition), which is usually the fastest check. Our composite confusion score for this pair is 48161, derived from the frequency rank of both members and their visual similarity.

poso is recorded at frequency rank #46,740, classified as anoun, pronounced [ˈposo]. pro is at rank #1,421, tagged as aprep, pronounced [ˈpɾo].

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 48161, this pair ranks #116,020 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of poso vs pro

Shared letters: op. Private to "poso": s. Private to "pro": r.

"poso" · 4 letters · shape CVCV  ·  "pro" · 3 letters · shape CCV

Known mistypes of this pair

  • posoopso · poos · posso · pposo · psoo

Frequently Asked Questions

Can "poso" and "pro" be used interchangeably?
No - they are not even the same part of speech. "poso" is a noun and "pro" a preposition, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "poso" or "pro"?
"pro" is the more common of the two: it sits at frequency rank #1,421 in our Spanish list, against #46,740 for "poso". 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 "poso" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #116,020 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "poso" and "pro" also get mixed up with nearby pairs, the highest-scored neighbour is "poso vs probo". 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 #116,020 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