Which to use
“Rh” and “ru” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #9,385
- “Rh” frequency rank
- #16,467
- “ru” frequency rank
- 25852
- confusion score
Side-by-Side Comparison
| Feature | Rh | ru |
|---|---|---|
| Definition | Symbole du rhésus. | Petit ruisseau. |
Where the eye mixes Rh and ru
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between Rh and ru
A purely visual mix-up. Rh (\ɛ.ʁaʃ\) and ru (\ʁy\) 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 a single letter - h in “Rh” becomes u in “ru”. Our composite confusion score for this pair is 25852, derived from the frequency rank of both members and their visual similarity.
Rh is recorded at frequency rank #9,385, classified as anoun, pronounced \ɛ.ʁaʃ\. ru is at rank #16,467, tagged as anoun, pronounced \ʁy\.
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 25852, this pair ranks #338,499 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of Rh vs ru
Shared letters: r. Private to "Rh": h. Private to "ru": u.
"Rh" · 2 letters · shape CC · "ru" · 2 letters · shape CV
Frequently Asked Questions
Is swapping "Rh" for "ru" ever safe?
Frequency check: "Rh" vs "ru" - which ranks higher?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "Rh" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ru" - compare definitions side by side with the headword page. Word entry
- This pair ranks #338,499 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "Rh" and "ru" also get mixed up with nearby pairs, the highest-scored neighbour is "rog vs ru". Nearby pair
Confusion rank #338,499 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.