# ills vs iOS

> English confusable word pair

## The two words

### ills
*noun · IPA /ɪlz/ · frequency rank #28,587*
plural of ill

### iOS
*name · frequency rank #5,888*
A mobile operating system (OS) created and developed by Apple Inc. exclusively for its hardware.

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