Which to use
“ruff” is a noun and “Rus” is a name - they look or sound alike but fill different roles in a sentence.
- #27,272
- “ruff” frequency rank
- #26,234
- “Rus” frequency rank
- 53506
- confusion score
Side-by-Side Comparison
| Feature | ruff | Rus |
|---|---|---|
| Definition | A circular frill or ruffle on a garment, especially a starched, fluted frill at the neck in Elizabethan and Jacobean England (1560s–1620s). | A people made up of Scandinavian warrior merchants who travelled Eastern European river-roads from the eighth century, and whose settlements around Novgorod, Kiev/Kyiv and the Volga and Dnieper/Dnipro gave rise to the Rus' principalities. |
Where the spellings diverge
Shared letters are muted; the letters that actually set ruff and Rus apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
ruff and Rus form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 53506, derived from the frequency rank of both members and their visual similarity.
ruff is recorded at frequency rank #27,272, classified as anoun, pronounced /ɹʌf/. Rus is at rank #26,234, tagged as aname, pronounced /ɹuːs/.
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 53506, this pair ranks #148,387 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "ruff" and "Rus" be used interchangeably?
Remembering ruff vs Rus
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “ruff”; for a name, it's “Rus”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “ruff” entry
- Browse more pairs most likely to be confused. Most confusable