Which to use
“pun” is a verb and “pus” is a noun - they look or sound alike but fill different roles in a sentence.
- #13,993
- “pun” frequency rank
- #28,336
- “pus” frequency rank
- 42329
- confusion score
Side-by-Side Comparison
| Feature | pun | pus |
|---|---|---|
| Definition | To beat; strike with force; to ram; to pound, as in a mortar; reduce to powder, to pulverize. | A whitish-yellow or yellow substance composed primarily of dead white blood cells and dead pyogenic bacteria, normally found in regions of bacterial infection. |
Where the eye mixes pun and pus
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses pun with pus
These two trip readers on the page rather than in the ear: pun is /pʌn/ while pus is /pʌs/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - n in “pun” becomes s in “pus”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 42329, derived from the frequency rank of both members and their visual similarity.
pun is recorded at frequency rank #13,993, classified as averb, pronounced /pʌn/. pus is at rank #28,336, tagged as anoun, pronounced /pʌs/.
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 42329, this pair ranks #250,226 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of pun vs pus
Shared letters: pu. Private to "pun": n. Private to "pus": s.
"pun" · 3 letters · shape CVC · "pus" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "pun" for "pus" ever safe?
Which is more common, "pun" or "pus"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "pun" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "pus" - compare definitions side by side with the headword page. Word entry
- This pair ranks #250,226 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "pun" and "pus" also get mixed up with nearby pairs, the highest-scored neighbour is "PPA vs pus". Nearby pair
Confusion rank #250,226 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.