# io vs IRS

> English confusable word pair

## The two words

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

### IRS
*name · IPA /ˈaɪ.ɑɹ.ɛs/ · frequency rank #8,440*
Initialism of Internal Revenue Service.

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