percavsperoTell them apart

Quick tell: perca is a noun, pero is a conjunction, so they fill different roles in a sentence.

Which to use

“perca” is a noun and “pero” is a conjunction - they look or sound alike but fill different roles in a sentence.

#4,502
“perca” frequency rank
#17,884
“pero” frequency rank
22386
confusion score

Side-by-Side Comparison

Feature perca pero
Definition peixe de água doce, da família dos Percídeos (Percidae), de carne muito apreciada mas, porém

Letter map: perca vs pero

Shared letters muted; letters that set perca and pero apart highlighted. Shared run: 3.

5 ch
perca
4 ch
pero

Part-of-speech tell for perca / pero

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: perca is anoun and peroaconjunction. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 22386, derived from the frequency rank of both members and their visual similarity.

perca is recorded at frequency rank #4,502, classified as anoun. pero is at rank #17,884, tagged as aconj, pronounced /ˈpe.ɾu/.

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 22386, this pair ranks #47,667 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of perca vs pero

Shared letters: epr. Private to "perca": ac. Private to "pero": o.

"perca" · 5 letters · shape CVCCV  ·  "pero" · 4 letters · shape CVCV

Known mistypes of this pair

  • percaeprca · pecra · perac · percca · perrca · pperca · preca
  • peroepro · peor · perro · ppero · preo

Frequently Asked Questions

Is swapping "perca" for "pero" ever safe?
No - they are not even the same part of speech. "perca" is a noun and "pero" a conjunction, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "perca" or "pero" show up more?
"perca" is the more common of the two: it sits at frequency rank #4,502 in our Portuguese list, against #17,884 for "pero". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "perca" and "pero".

  • Full dictionary entry for "perca" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pero" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #47,667 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "perca" and "pero" also get mixed up with nearby pairs, the highest-scored neighbour is "pero vs pomo". 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 #47,667 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list