# SM vs SSB

> English confusable word pair

## The two words

### SM
*noun · frequency rank #11,123*
Initialism of service module.

### SSB
*noun · frequency rank #45,099*
Initialism of single sideband, a type of radio emission.

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