# SIDS vs SPS

> English confusable word pair

## The two words

### SIDS
*noun · frequency rank #49,048*
Acronym of sudden infant death syndrome.

### SPS
*noun · frequency rank #34,299*
Initialism of supplementary policy statement.

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