# ISD vs ith

> English confusable word pair

## The two words

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

### ith
*adjective · IPA /aɪθ/ · frequency rank #49,435*
Occurring at position i in a sequence.

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