RohrvsRotorWhat's the difference?

Which to use

“Rohr” and “Rotor” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#7,223
“Rohr” frequency rank
#46,242
“Rotor” frequency rank
53465
confusion score

Side-by-Side Comparison

Feature Rohr Rotor
Definition ein zylinderförmiger, hohler Gegenstand zur Durchleitung von Flüssigkeiten, Gasen und Feststoffen rotierendes Teil einer Maschine

Where the eye mixes Rohr and Rotor

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. Rohr runs 4 letters (CVCC) against Rotor's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
Rohr
5 ch
Rotor

Why the eye confuses Rohr with Rotor

A purely visual mix-up. Rohr ([ʁoːɐ̯]) and Rotor ([ˈʁoːtoːɐ̯]) 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 53465, derived from the frequency rank of both members and their visual similarity.

Rohr is recorded at frequency rank #7,223, classified as anoun, pronounced [ʁoːɐ̯]. Rotor is at rank #46,242, tagged as anoun, pronounced [ˈʁoːtoːɐ̯].

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 53465, this pair ranks #1,056,912 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Rohr vs Rotor

Shared letters: or. Private to "Rohr": h. Private to "Rotor": t.

"Rohr" · 4 letters · shape CVCC  ·  "Rotor" · 5 letters · shape CVCVC

Known mistypes of this pair

  • Rohr ← orhr · rhor · rohhr · rohrr · rorh · rrohr
  • Rotor ← ortor · rootr · rotorr · rotro · rottor · rrotor · rtoor

Frequently Asked Questions

Do "Rohr" and "Rotor" mean the same thing in a sentence?
No. They are said differently ([ʁoːɐ̯] versus [ˈʁoːtoːɐ̯]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary German text, does "Rohr" or "Rotor" show up more?
"Rohr" is the more common of the two: it sits at frequency rank #7,223 in our German list, against #46,242 for "Rotor". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "Rohr" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Rotor" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,056,912 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Rohr" and "Rotor" also get mixed up with nearby pairs, the highest-scored neighbour is "robo vs Rotor". 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 #1,056,912 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list