# key vs ko

> English confusable word pair

## The two words

### key
*noun · IPA /kiː/ · frequency rank #788*
An object designed to open and close a lock.

### ko
*noun · IPA /ˈkəʊ/ · frequency rank #10,717*
A local shape to which the ko rule applies; a ko shape.

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