# locum vs lum

> English confusable word pair

## The two words

### locum
*noun · IPA /ˈləʊkəm/ · frequency rank #47,732*
Ellipsis of locum tenens.

### 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/locum-vs-lum