PCL vs per, What's the Difference?

Which to use

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

#47,250
“PCL” frequency rank: #339
“per” frequency rank: 47589
confusion score

Side-by-Side Comparison

Feature	PCL	per
Definition	Initialism of polycaprolactone.	For each.

Letter map: PCL vs per

Shared letters muted; letters that set PCL and per apart highlighted. Shared run: 1. PCL (CCC) and per (CVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch

PCL

3 ch

per

Role in the sentence - PCL and per

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: PCL is anoun and perapreposition. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 47589, derived from the frequency rank of both members and their visual similarity.

PCL is recorded at frequency rank #47,250, classified as anoun. 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 47589, this pair ranks #201,026 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of PCL vs per

Shared letters: p. Private to "PCL": cl. Private to "per": er.

"PCL" · 3 letters · shape CCC · "per" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "PCL" for "per" ever safe?

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

Frequency check: "PCL" vs "per" - which ranks higher?

"per" is the more common of the two: it sits at frequency rank #339 in our English list, against #47,250 for "PCL". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "PCL" and "per". Here's where to go from here.

Full dictionary entry for "PCL" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "per" - compare definitions side by side with the headword page. Word entry
This pair ranks #201,026 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"PCL" and "per" also get mixed up with nearby pairs, the highest-scored neighbour is "PCL vs PPA". Nearby pair

Confusion rank #201,026 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.