Which to use
“pec” is a noun and “perf” is an adjective - they look or sound alike but fill different roles in a sentence.
- #47,251
- “pec” frequency rank
- #42,815
- “perf” frequency rank
- 90066
- confusion score
Side-by-Side Comparison
| Feature | pec | perf |
|---|---|---|
| Definition | The pectoralis major muscle. | Abbreviation of perforated; when followed by a number, eg, perf 14, this indicates the number of perforations per two centimetres. |
Where the spellings diverge
Shared letters are muted; the letters that actually set pec and perf apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: pec is anoun and perfanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 90066, derived from the frequency rank of both members and their visual similarity.
pec is recorded at frequency rank #47,251, classified as anoun. perf is at rank #42,815, tagged as anadj, pronounced /pɜː(ɹ)f/.
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 90066, this pair ranks #4,539 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of pec vs perf
Shared letters: ep. Private to "pec": c. Private to "perf": fr.
"pec" · 3 letters · shape CVC · "perf" · 4 letters · shape CVCC
Known mistypes of this pair
- perf ← eprf · pefr · perff · perrf · pperf · pref
Frequency comparison
Frequently Asked Questions
Can "pec" and "perf" be used interchangeably?
Which is more common, "pec" or "perf"?
Remembering pec vs perf
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “pec”; for an adjective, it's “perf”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “pec” entry
- Browse more pairs most likely to be confused. Most confusable