Which to use
“sinus” and “sons” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #20,225
- “sinus” frequency rank
- #3,028
- “sons” frequency rank
- 23253
- confusion score
Side-by-Side Comparison
| Feature | sinus | sons |
|---|---|---|
| Definition | A pouch or cavity in a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities (the paranasal sinus). | plural of son |
Where the eye mixes sinus and sons
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses sinus with sons
A purely visual mix-up. sinus (/ˈsaɪ.nəs/) and sons (/sʌnz/) 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 23253, derived from the frequency rank of both members and their visual similarity.
sinus is recorded at frequency rank #20,225, classified as anoun, pronounced /ˈsaɪ.nəs/. sons is at rank #3,028, tagged as anoun, pronounced /sʌnz/.
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 23253, this pair ranks #410,656 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sinus vs sons
Shared letters: ns. Private to "sinus": iu. Private to "sons": o.
"sinus" · 5 letters · shape CVCVC · "sons" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "sinus" for "sons" ever safe?
Frequency check: "sinus" vs "sons" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "sinus" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sons" - compare definitions side by side with the headword page. Word entry
- This pair ranks #410,656 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sinus" and "sons" also get mixed up with nearby pairs, the highest-scored neighbour is "SIDS vs sinus". 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 #410,656 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.