Which to use
“reef” and “res” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #9,240
- “reef” frequency rank
- #9,811
- “res” frequency rank
- 19051
- confusion score
Side-by-Side Comparison
| Feature | reef | res |
|---|---|---|
| Definition | A chain or range of rocks, sand, or coral lying at or near the surface of the water. | plural of re |
Where the eye mixes reef and res
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses reef with res
A purely visual mix-up. reef (/ɹiːf/) and res (/ɹeɪz/) 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 19051, derived from the frequency rank of both members and their visual similarity.
reef is recorded at frequency rank #9,240, classified as anoun, pronounced /ɹiːf/. res is at rank #9,811, tagged as anoun, pronounced /ɹeɪz/.
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 19051, this pair ranks #440,829 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of reef vs res
Shared letters: er. Private to "reef": f. Private to "res": s.
"reef" · 4 letters · shape CVVC · "res" · 3 letters · shape CVC
Known mistypes of this pair
- reef ← eref · reeff · refe · rreef
Frequently Asked Questions
Can "reef" and "res" be used interchangeably?
In ordinary English text, does "reef" or "res" show up more?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "reef" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "res" - compare definitions side by side with the headword page. Word entry
- This pair ranks #440,829 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "reef" and "res" also get mixed up with nearby pairs, the highest-scored neighbour is "res vs Rua". 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 #440,829 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.