# decay vs deco

> English confusable word pair

## The two words

### decay
*noun · IPA /dɪˈkeɪ/ · frequency rank #9,160*
Rot; any processes or result of organic matter being gradually decomposed, especially by microbial action.

### deco
*noun · frequency rank #16,886*
Decompression.

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