Which to use
“PTS” is a phrase and “PTSD” is a noun - they look or sound alike but fill different roles in a sentence.
- #15,683
- “PTS” frequency rank
- #14,195
- “PTSD” frequency rank
- 29878
- confusion score
Side-by-Side Comparison
| Feature | PTS | PTSD |
|---|---|---|
| Definition | Initialism of pay to surf: a business model where users are paid for viewing advertisements while browsing the World Wide Web. | Initialism of post-traumatic stress disorder. |
Letter map: PTS vs PTSD
Shared letters muted; letters that set PTS and PTSD apart highlighted. Shared run: 3.
Grammar separator: PTS vs PTSD
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: PTS is aphrase and PTSDanoun. On the page they differ by 1 extra letter(s) - “PTS” sits inside “PTSD”. Our composite confusion score for this pair is 29878, derived from the frequency rank of both members and their visual similarity.
PTS is recorded at frequency rank #15,683, classified as aphrase. PTSD is at rank #14,195, tagged as anoun.
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 29878, this pair ranks #359,277 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of PTS vs PTSD
Shared letters: pst. Private to "PTS": -. Private to "PTSD": d.
"PTS" · 3 letters · shape CCC · "PTSD" · 4 letters · shape CCCC
Known mistypes of this pair
- PTSD ← pptsd · pstd · ptds · ptsdd · ptssd · pttsd · tpsd
Frequently Asked Questions
Is swapping "PTS" for "PTSD" ever safe?
Which is more common, "PTS" or "PTSD"?
What to do next
Done with this confusable. These links stay specific to "PTS" and "PTSD".
- Full dictionary entry for "PTS" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "PTSD" - compare definitions side by side with the headword page. Word entry
- This pair ranks #359,277 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "PTS" and "PTSD" also get mixed up with nearby pairs, the highest-scored neighbour is "PPA vs PTS". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #359,277 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.