Which to use
“span” is a noun and “sprain” is a verb - they look or sound alike but fill different roles in a sentence.
- #6,416
- “span” frequency rank
- #35,092
- “sprain” frequency rank
- 41508
- confusion score
Side-by-Side Comparison
| Feature | span | sprain |
|---|---|---|
| Definition | The full width of an open hand from the end of the thumb to the end of the little finger used as an informal unit of length. | To weaken, as a joint, ligament, or muscle, by sudden and excessive exertion, as by wrenching; to overstrain, or stretch injuriously, but without luxation |
Where the eye mixes span and sprain
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: span vs sprain
These two trip readers on the page rather than in the ear: span is /spæn/ while sprain is /spɹeɪn/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 41508, derived from the frequency rank of both members and their visual similarity.
span is recorded at frequency rank #6,416, classified as anoun, pronounced /spæn/. sprain is at rank #35,092, tagged as averb, pronounced /spɹeɪn/.
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 41508, this pair ranks #257,717 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of span vs sprain
Shared letters: anps. Private to "span": -. Private to "sprain": ir.
"span" · 4 letters · shape CCVC · "sprain" · 6 letters · shape CCCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "span" for "sprain" ever safe?
Which is more common, "span" or "sprain"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "span" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sprain" - compare definitions side by side with the headword page. Word entry
- This pair ranks #257,717 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "span" and "sprain" also get mixed up with nearby pairs, the highest-scored neighbour is "saran vs sprain". 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 #257,717 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.