# addon vs anion

> English confusable word pair

## The two words

### addon
*noun · frequency rank #45,188*
Alternative form of add-on.

### anion
*noun · IPA /ˈænˌaɪ.ən/ · frequency rank #41,506*
A negatively charged ion.

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