Which to use
“rus” and “rust” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #37,537
- “rus” frequency rank
- #37,050
- “rust” frequency rank
- 74587
- confusion score
Side-by-Side Comparison
| Feature | rus | rust |
|---|---|---|
| Definition | Pluriel de ru. | Rouille. |
Where the eye mixes rus and rust
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between rus and rust
A purely visual mix-up. rus (\ʁy\) and rust (\ɻʌst\) 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 extra letter(s) - “rus” sits inside “rust”. Our composite confusion score for this pair is 74587, derived from the frequency rank of both members and their visual similarity.
rus is recorded at frequency rank #37,537, classified as anoun, pronounced \ʁy\. rust is at rank #37,050, tagged as anoun, pronounced \ɻʌst\.
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 74587, this pair ranks #36,678 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of rus vs rust
Shared letters: rsu. Private to "rus": -. Private to "rust": t.
"rus" · 3 letters · shape CVC · "rust" · 4 letters · shape CVCC
Known mistypes of this pair
- rust ← rrust · rsut · russt · rustt · ruts · urst
Frequently Asked Questions
Is swapping "rus" for "rust" ever safe?
Frequency check: "rus" vs "rust" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "rus" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rust" - compare definitions side by side with the headword page. Word entry
- This pair ranks #36,678 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "rus" and "rust" also get mixed up with nearby pairs, the highest-scored neighbour is "Rhys vs rus". 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 #36,678 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.