# lex vs lum

> English confusable word pair

## The two words

### lex
*verb · IPA /lɛks/ · frequency rank #14,983*
To perform lexical analysis; to convert a character stream to a token stream as a preliminary to parsing.

### 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/lex-vs-lum