poliovspotionWhich spelling fits?

Which to use

“polio” and “potion” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#20,461
“polio” frequency rank
#19,169
“potion” frequency rank
39630
confusion score

Side-by-Side Comparison

Feature polio potion
Definition Abbreviation of poliomyelitis. A small portion or dose of a liquid which is medicinal, poisonous, or magical.

Where the eye mixes polio and potion

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
polio
6 ch
potion

Visual trap between polio and potion

A purely visual mix-up. polio (/ˈpəʊljəʊ/) and potion (/ˈpəʊ.ʃən/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 39630, derived from the frequency rank of both members and their visual similarity.

polio is recorded at frequency rank #20,461, classified as anoun, pronounced /ˈpəʊljəʊ/. potion is at rank #19,169, tagged as anoun, pronounced /ˈpəʊ.ʃən/.

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 39630, this pair ranks #274,919 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of polio vs potion

Shared letters: iop. Private to "polio": l. Private to "potion": nt.

"polio" · 5 letters · shape CVCVV  ·  "potion" · 6 letters · shape CVCVVC

Known mistypes of this pair

  • poliooplio · ploio · poilo · pollio · poloi · ppolio
  • potionpoiton · potino · potionn · potoin · pottion · ppotion · ptoion

Frequently Asked Questions

Is swapping "polio" for "potion" ever safe?
No. They are said differently (/ˈpəʊljəʊ/ versus /ˈpəʊ.ʃən/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "polio" or "potion" show up more?
"potion" is the more common of the two: it sits at frequency rank #19,169 in our English list, against #20,461 for "polio". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "polio" and "potion" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "polio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "potion" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #274,919 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "polio" and "potion" also get mixed up with nearby pairs, the highest-scored neighbour is "poon vs potion". 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 #274,919 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