# scum vs sum

> English confusable word pair

## The two words

### scum
*noun · IPA /skʌm/ · frequency rank #11,112*
A layer of impurities that accumulates at the surface of a liquid (especially molten metal or water).

### 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/scum-vs-sum