# jack vs jerk

> English confusable word pair

## The two words

### jack
*noun · IPA /d͡ʒæk/ · frequency rank #1,604*
A coarse medieval coat of defence, especially one made of leather.

### jerk
*noun · IPA /ˈd͡ʒɜːk/ · frequency rank #7,148*
A sudden, often uncontrolled movement, especially of the human body.

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