RuhrvsRuizTell them apart

Which to use

“Ruhr” and “Ruiz” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#40,978
“Ruhr” frequency rank
#21,757
“Ruiz” frequency rank
62735
confusion score

Side-by-Side Comparison

Feature Ruhr Ruiz
Definition Affluent droit du Rhin Nom de famille espagnol.

Letter map: Ruhr vs Ruiz

Shared letters muted; letters that set Ruhr and Ruiz apart highlighted. Shared run: 2.

4 ch
Ruhr
4 ch
Ruiz

Pair insight - Ruhr / Ruiz

Ruhr and Ruiz are indexed as a confusable French pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 62735, derived from the frequency rank of both members and their visual similarity.

Ruhr is recorded at frequency rank #40,978, classified as aname. Ruiz is at rank #21,757, tagged as aname.

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 62735, this pair ranks #85,584 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of Ruhr vs Ruiz

Shared letters: ru. Private to "Ruhr": h. Private to "Ruiz": iz.

"Ruhr" · 4 letters · shape CVCC  ·  "Ruiz" · 4 letters · shape CVVC

Known mistypes of this pair

  • Ruhrrhur · rruhr · ruhhr · ruhrr · rurh · urhr
  • Ruizriuz · rruiz · ruizz · ruzi · uriz

Frequently Asked Questions

Is swapping "Ruhr" for "Ruiz" ever safe?
No. They share most of their letters but differ in 2 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Which is more common, "Ruhr" or "Ruiz"?
"Ruiz" is the more common of the two: it sits at frequency rank #21,757 in our French list, against #40,978 for "Ruhr". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "Ruhr" and "Ruiz". Here's where to go from here.

  • Full dictionary entry for "Ruhr" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Ruiz" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #85,584 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "Ruhr" and "Ruiz" also get mixed up with nearby pairs, the highest-scored neighbour is "Ruhr vs Rune". 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 #85,584 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list