# EP vs eta

> English confusable word pair

## The two words

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

### eta
*noun · IPA /ˈiːtə/ · frequency rank #17,836*
The seventh letter of the Modern Greek alphabet, the eighth in Old Greek.

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