# annex vs apex

> English confusable word pair

## The two words

### annex
*noun · IPA /ˈænɛks/ · frequency rank #14,883*
An addition, an extension.

### apex
*noun · IPA /ˈeɪ.pɛks/ · frequency rank #10,981*
The highest or the greatest part of something, especially forming a point.

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