# radio vs radium

> English confusable word pair

## The two words

### radio
*noun · IPA /ˈɹeɪdiˌəʊ/ · frequency rank #1,059*
The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.

### radium
*noun · IPA /ˈɹeɪ.dɪ.əm/ · frequency rank #37,184*
The chemical element (symbol Ra) with an atomic number of 88. It is a soft, shiny and silvery radioactive alkaline earth metal.

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