# ISD vs ISIL

> English confusable word pair

## The two words

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

### ISIL
*name · IPA /ˈaɪsəl/ · frequency rank #18,597*
Synonym of ISIS.

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