# io vs iso

> English confusable word pair

## The two words

### io
*noun · IPA /ˈaɪəʊ/ · frequency rank #16,946*
A type of moth, the io moth.

### iso
*noun · IPA /ˈaɪsəʊ/ · frequency rank #9,771*
Clipping of isolation.

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