# CM vs CU

> English confusable word pair

## The two words

### CM
*noun · frequency rank #4,512*
Initialism of chief minister.

### CU
*noun · frequency rank #13,895*
Initialism of control unit.

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