Which to use
“Ru” is an abbrev and “Ruhr” is a noun - they look or sound alike but fill different roles in a sentence.
- #24,484
- “Ru” frequency rank
- #7,804
- “Ruhr” frequency rank
- 32288
- confusion score
Side-by-Side Comparison
| Feature | Ru | Ruhr |
|---|---|---|
| Definition | Ruthenium | Infektionskrankheit des Darms |
Letter map: Ru vs Ruhr
Shared letters muted; letters that set Ru and Ruhr apart highlighted. Shared run: 2.
Role in the sentence - Ru and Ruhr
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Ru is anabbrev and Ruhranoun. On the page they differ by 2 extra letter(s) - “Ru” sits inside “Ruhr”. Our composite confusion score for this pair is 32288, derived from the frequency rank of both members and their visual similarity.
Ru is recorded at frequency rank #24,484, classified as anabbrev. Ruhr is at rank #7,804, tagged as anoun, pronounced [ʁuːɐ̯].
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 32288, this pair ranks #1,710,831 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of Ru vs Ruhr
Shared letters: ru. Private to "Ru": -. Private to "Ruhr": h.
"Ru" · 2 letters · shape CV · "Ruhr" · 4 letters · shape CVCC
Known mistypes of this pair
- Ruhr ← rhur · rruhr · ruhhr · ruhrr · rurh · urhr
Frequently Asked Questions
Is swapping "Ru" for "Ruhr" ever safe?
Frequency check: "Ru" vs "Ruhr" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "Ru" and "Ruhr".
- Full dictionary entry for "Ru" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Ruhr" - compare definitions side by side with the headword page. Word entry
- This pair ranks #1,710,831 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "Ru" and "Ruhr" also get mixed up with nearby pairs, the highest-scored neighbour is "Ru vs RUB". 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 #1,710,831 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.