# addon vs axon

> English confusable word pair

## The two words

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

### axon
*noun · IPA /ˈæksɒn/ · frequency rank #43,039*
A nerve fibre which is a long slender projection of a nerve cell, and which conducts nerve impulses away from the body of the cell to a synapse.

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