# LSD vs lux

> English confusable word pair

## The two words

### LSD
*noun · frequency rank #20,986*
Initialism of £sd (pounds, shillings, pence).

### lux
*noun · IPA /lʌks/ · frequency rank #18,878*
In the International System of Units, the derived unit of illuminance or illumination; one lumen per square metre. Symbol: lx

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