Which to use
“past” and “PSA” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #437
- “past” frequency rank
- #15,483
- “PSA” frequency rank
- 15920
- confusion score
Side-by-Side Comparison
| Feature | past | PSA |
|---|---|---|
| Definition | The period of time that has already happened, in contrast to the present and the future. | Initialism of polysialic acid. |
Letter map: past vs PSA
Shared letters muted; letters that set past and PSA apart highlighted. Shared run: 2.
Spelling & Dictionary Insight
past and PSA are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 15920, derived from the frequency rank of both members and their visual similarity.
past is recorded at frequency rank #437, classified as anoun, pronounced /pɑːst/. PSA is at rank #15,483, 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 15920, this pair ranks #461,012 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of past vs PSA
Shared letters: aps. Private to "past": t. Private to "PSA": -.
"past" · 4 letters · shape CVCC · "PSA" · 3 letters · shape CCV
Known mistypes of this pair
- past ← apst · passt · pastt · ppast · psat