# iso vs isu

> English confusable word pair

## The two words

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

### isu
*noun · frequency rank #37,989*
An individual seat in the loft-like balcony of a sumo arena.

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