# IRC vs ISD

> English confusable word pair

## The two words

### IRC
*name · frequency rank #25,427*
Initialism of Internet Relay Chat.

### ISD
*noun · IPA /aɪ ɛs diː/ · frequency rank #36,199*
Initialism of intermediate school district.

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