# ECM vs eo

> English confusable word pair

## The two words

### ECM
*noun · frequency rank #33,219*
Initialism of engine control module.

### eo
*noun · frequency rank #25,373*
A Korean wooden percussion instrument in the shape of a tiger with a serrated back, played by running a bamboo whisk across the serrations.

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