pillvsPLAWhich spelling fits?

Quick tell: pill is a noun, PLA is a name, so they fill different roles in a sentence.

Which to use

“pill” is a noun and “PLA” is a name - they look or sound alike but fill different roles in a sentence.

#6,821
“pill” frequency rank
#20,735
“PLA” frequency rank
27556
confusion score

Side-by-Side Comparison

Feature pill PLA
Definition A small, usually round or cylindrical object designed for easy swallowing, usually containing some sort of medication. Initialism of Port of London Authority.

Letter map: pill vs PLA

Shared letters muted; letters that set pill and PLA apart highlighted. Shared run: 2.

4 ch
pill
3 ch
PLA

Part-of-speech tell for pill / PLA

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: pill is anoun and PLAaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 27556, derived from the frequency rank of both members and their visual similarity.

pill is recorded at frequency rank #6,821, classified as anoun, pronounced /pɪl/. PLA is at rank #20,735, tagged as aname.

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 27556, this pair ranks #377,988 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of pill vs PLA

Shared letters: lp. Private to "pill": i. Private to "PLA": a.

"pill" · 4 letters · shape CVCC  ·  "PLA" · 3 letters · shape CCV

Known mistypes of this pair

  • pillipll · plil · ppill

Frequently Asked Questions

Is swapping "pill" for "PLA" ever safe?
No - they are not even the same part of speech. "pill" is a noun and "PLA" a name, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "pill" vs "PLA" - which ranks higher?
"pill" is the more common of the two: it sits at frequency rank #6,821 in our English list, against #20,735 for "PLA". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "pill" vs "PLA" is on the table, pick a follow-up below.

  • Full dictionary entry for "pill" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "PLA" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #377,988 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "pill" and "PLA" also get mixed up with nearby pairs, the highest-scored neighbour is "PLA vs PPA". 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 #377,988 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list