# MP4 vs MRI

> English confusable word pair

## The two words

### MP4
*noun · frequency rank #26,176*
Abbreviation of MPEG-4 Part 14, a file format for playing music and videos.

### MRI
*noun · frequency rank #13,763*
Initialism of magnetic resonance imaging.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/mp4-vs-mri