Which to use
“pcm” is an adverb and “per” is a preposition - they look or sound alike but fill different roles in a sentence.
- #41,305
- “pcm” frequency rank
- #339
- “per” frequency rank
- 41644
- confusion score
Side-by-Side Comparison
| Feature | pcm | per |
|---|---|---|
| Definition | Initialism of per calendar month. | For each. |
Where the spellings diverge
Shared letters are muted; the letters that actually set pcm and per apart are highlighted. They share 1 letter 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: pcm is anadverb and perapreposition. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 41644, derived from the frequency rank of both members and their visual similarity.
pcm is recorded at frequency rank #41,305, classified as anadv. per is at rank #339, tagged as aprep, pronounced /pɜː/.
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 41644, this pair ranks #256,371 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of pcm vs per
Shared letters: p. Private to "pcm": cm. Private to "per": er.
"pcm" · 3 letters · shape CCC · "per" · 3 letters · shape CVC
Frequency comparison
Frequently Asked Questions
Can "pcm" and "per" be used interchangeably?
Which is more common, "pcm" or "per"?
Remembering pcm vs per
The fastest way to pick the right one every time.
- Check the role first: if you need an adverb, it's “pcm”; for a preposition, it's “per”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “pcm” entry
- Browse more pairs most likely to be confused. Most confusable