# diffuse vs diffuser

> English confusable word pair

## The two words

### diffuse
*verb · IPA /dɪˈfjuːz/ · frequency rank #20,095*
To spread (something) over or through as in air, water, or other matter, especially by fluid motion or passive means.

### diffuser
*adjective · IPA /dɪˈfjuːsə(ɹ)/ · frequency rank #37,890*
comparative form of diffuse: more diffuse

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/diffuse-vs-diffuser