Which to use
“perch” is a noun and “perf” is an adjective - they look or sound alike but fill different roles in a sentence.
- #19,934
- “perch” frequency rank
- #42,815
- “perf” frequency rank
- 62749
- confusion score
Side-by-Side Comparison
| Feature | perch | perf |
|---|---|---|
| Definition | Any of the three species of spiny-finned freshwater fish in the genus Perca. | 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 perch and perf apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
perch and perf form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 62749, derived from the frequency rank of both members and their visual similarity.
perch is recorded at frequency rank #19,934, classified as anoun, pronounced /pɜːtʃ/. 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 62749, this pair ranks #86,717 of 530,003 scored English confusable pairs - among the most confusable pairs.
Frequency comparison
Frequently Asked Questions
Can "perch" and "perf" be used interchangeably?
Remembering perch vs perf
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “perch”; for an adjective, it's “perf”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “perch” entry
- Browse more pairs most likely to be confused. Most confusable