# SIDS vs skies

> English confusable word pair

## The two words

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

### skies
*noun · IPA /skaɪz/ · frequency rank #8,204*
plural of sky though essentially synonymous with singular form; the heavens; the firmament; the atmosphere.

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