# robust vs rust

> English confusable word pair

## The two words

### robust
*adjective · IPA /ɹəʊˈbʌst/ · frequency rank #7,843*
Able to withstand adverse conditions.

### 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: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/robust-vs-rust