PDA vs per, What's the Difference?

Which to use

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

#30,912
“PDA” frequency rank: #339
“per” frequency rank: 31251
confusion score

Side-by-Side Comparison

Feature	PDA	per
Definition	Initialism of personal digital assistant.	For each.

Letter map: PDA vs per

Shared letters muted; letters that set PDA and per apart highlighted. Shared run: 1.

3 ch

PDA

3 ch

per

Role in the sentence - PDA and per

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: PDA 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 31251, derived from the frequency rank of both members and their visual similarity.

PDA is recorded at frequency rank #30,912, 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 31251, this pair ranks #347,721 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of PDA vs per

Shared letters: p. Private to "PDA": ad. Private to "per": er.

"PDA" · 3 letters · shape CCV · "per" · 3 letters · shape CVC

Frequently Asked Questions

Can "PDA" and "per" be used interchangeably?

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

Which is more common, "PDA" or "per"?

"per" is the more common of the two: it sits at frequency rank #339 in our English list, against #30,912 for "PDA". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "PDA" and "per".

Full dictionary entry for "PDA" 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 #347,721 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"PDA" and "per" also get mixed up with nearby pairs, the highest-scored neighbour is "PDA vs PPA". Nearby pair

Confusion rank #347,721 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.