pecvsPetrConfusable pair

Quick tell: pec is a noun, Petr is a name, so they fill different roles in a sentence.

Which to use

“pec” is a noun and “Petr” is a name - they look or sound alike but fill different roles in a sentence.

#47,251
“pec” frequency rank
#32,535
“Petr” frequency rank
79786
confusion score

Side-by-Side Comparison

Feature pec Petr
Definition The pectoralis major muscle. Alternative form of Pyotr.

Letter map: pec vs Petr

Shared letters muted; letters that set pec and Petr apart highlighted. Shared run: 2. pec runs 3 letters (CVC) against Petr's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.

3 ch
pec
4 ch
Petr

Part-of-speech tell for pec / Petr

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: pec is anoun and Petraname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 79786, derived from the frequency rank of both members and their visual similarity.

pec is recorded at frequency rank #47,251, classified as anoun. Petr is at rank #32,535, tagged as aname.

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 79786, this pair ranks #21,290 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of pec vs Petr

Shared letters: ep. Private to "pec": c. Private to "Petr": rt.

"pec" · 3 letters · shape CVC  ·  "Petr" · 4 letters · shape CVCC

Known mistypes of this pair

  • Petr ← eptr · petrr · pettr · ppetr · pter

Frequently Asked Questions

Is swapping "pec" for "Petr" ever safe?
No - they are not even the same part of speech. "pec" is a noun and "Petr" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "pec" or "Petr"?
"Petr" is the more common of the two: it sits at frequency rank #32,535 in our English list, against #47,251 for "pec". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "pec" vs "Petr" is on the table, pick a follow-up below.

  • Full dictionary entry for "pec" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Petr" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #21,290 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "pec" and "Petr" also get mixed up with nearby pairs, the highest-scored neighbour is "pec vs PPA". 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 #21,290 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list