# MDMA vs MSM

> English confusable word pair

## The two words

### MDMA
*noun · frequency rank #35,404*
3,4-methylenedioxymethamphetamine, a synthetic entactogen of the methylenedioxyphenethylamine family.

### MSM
*noun · frequency rank #20,171*
Initialism of methylsulfonylmethane.

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