roomvsRostTell them apart

Which to use

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

#13,002
“room” frequency rank
#14,913
“Rost” frequency rank
27915
confusion score

Side-by-Side Comparison

Feature room Rost
Definition Raum, Zimmer rötlich braunes Produkt der Korrosion von Eisen

Where the eye mixes room and Rost

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
room
4 ch
Rost

Why the eye confuses room with Rost

A purely visual mix-up. room ([ɹuːm]) and Rost ([ʁɔst]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 27915, derived from the frequency rank of both members and their visual similarity.

room is recorded at frequency rank #13,002, classified as anoun, pronounced [ɹuːm]. Rost is at rank #14,913, tagged as anoun, pronounced [ʁɔst].

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 27915, this pair ranks #1,793,723 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of room vs Rost

Shared letters: or. Private to "room": m. Private to "Rost": st.

"room" · 4 letters · shape CVVC  ·  "Rost" · 4 letters · shape CVCC

Known mistypes of this pair

  • roomorom · rom · romo · roomm · rroom
  • Rostorst · rosst · rostt · rots · rrost · rsot

Frequently Asked Questions

Do "room" and "Rost" mean the same thing in a sentence?
No. They are said differently ([ɹuːm] versus [ʁɔst]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "room" vs "Rost" - which ranks higher?
"room" is the more common of the two: it sits at frequency rank #13,002 in our German list, against #14,913 for "Rost". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "room" and "Rost" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "room" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Rost" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,793,723 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "room" and "Rost" also get mixed up with nearby pairs, the highest-scored neighbour is "Rost vs RSA". 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 #1,793,723 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