# ICD vs ies

> English confusable word pair

## The two words

### ICD
*noun · frequency rank #34,926*
Initialism of implantable cardioverter-defibrillator.

### ies
*noun · frequency rank #45,988*
plural of i, the name of the letter I.

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