# r's vs rust

> English confusable word pair

## The two words

### r's
*noun · frequency rank #40,861*
plural of r

### rust
*noun · IPA /ɹʌst/ · frequency rank #10,604*
The deteriorated state of iron or steel as a result of moisture and oxidation; it consists mostly of iron(III) oxide (ferric oxide) and iron(II) oxide (ferrous oxide).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/r-s-vs-rust