# EP vs erm

> English confusable word pair

## The two words

### EP
*noun · frequency rank #5,033*
Initialism of extreme pressure, an indicator used in lubricant additives.

### erm
*intj · IPA /ɜːm/ · frequency rank #21,789*
Used in hesitant speech, or to express uncertainty.

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