# ROS vs rot

> English confusable word pair

## The two words

### ROS
*noun · frequency rank #19,685*
Abbreviation of reactive oxygen species.

### rot
*verb · IPA /ɹɒt/ · frequency rank #11,285*
To suffer decomposition due to biological action, especially by fungi or bacteria.

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