# sou vs sum

> English confusable word pair

## The two words

### sou
*noun · IPA /suː/ · frequency rank #35,525*
An old French copper coin equal to one twentieth of a livre or twelve deniers; one sou is to the livre as one shilling is to the pound.

### sum
*noun · IPA /sʌm/ · frequency rank #4,050*
A quantity obtained by addition or aggregation.

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