# serum vs sperm

> English confusable word pair

## The two words

### serum
*noun · IPA /ˈsɪəɹəm/ · frequency rank #10,609*
Ellipsis of blood serum.

### sperm
*noun · IPA /spɜɹm/ · frequency rank #9,102*
The reproductive cell or gamete of the male; a spermatozoon.

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