# radon vs reason

> English confusable word pair

## The two words

### radon
*noun · IPA /ˈɹeɪdɒn/ · frequency rank #33,384*
The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.

### reason
*noun · IPA /ˈɹiː.zən/ · frequency rank #479*
A cause:

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