# LSD vs lum

> English confusable word pair

## The two words

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

### lum
*noun · IPA /lʌm/ · frequency rank #47,736*
A chimney; also, the top part of a chimney.

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