per vs Petro, What's the Difference?

Which to use

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

#5,775
“per” frequency rank: #35,725
“Petro” frequency rank: 41500
confusion score

Side-by-Side Comparison

Feature	per	Petro
Definition	por	Pedro

Letter map: per vs Petro

Shared letters muted; letters that set per and Petro apart highlighted. Shared run: 3.

3 ch

per

5 ch

Petro

Grammar separator: per vs Petro

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: per is apreposition and Petroanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 41500, derived from the frequency rank of both members and their visual similarity.

per is recorded at frequency rank #5,775, classified as aprep. Petro is at rank #35,725, tagged as anoun, pronounced /ˈpe.tɾo/..

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 41500, this pair ranks #24,416 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of per vs Petro

Shared letters: epr. Private to "per": -. Private to "Petro": ot.

"per" · 3 letters · shape CVC · "Petro" · 5 letters · shape CVCCV

Known mistypes of this pair

Petro ← eptro · petor · petrro · pettro · ppetro · ptero

Frequently Asked Questions

Can "per" and "Petro" be used interchangeably?

No - they are not even the same part of speech. "per" is a preposition and "Petro" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "per" or "Petro"?

"per" is the more common of the two: it sits at frequency rank #5,775 in our Portuguese list, against #35,725 for "Petro". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "per" vs "Petro" is on the table, pick a follow-up below.

Full dictionary entry for "per" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Petro" - compare definitions side by side with the headword page. Word entry
This pair ranks #24,416 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"per" and "Petro" also get mixed up with nearby pairs, the highest-scored neighbour is "Petro vs Pietra". 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 #24,416 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.