# coder vs codex

> English confusable word pair

## The two words

### coder
*noun · frequency rank #42,066*
A device that generates a code, often as a series of pulses.

### codex
*noun · IPA /ˈkəʊdɛks/ · frequency rank #22,932*
An early manuscript book.

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