# ISP vs issa

> English confusable word pair

## The two words

### ISP
*noun · frequency rank #20,971*
Initialism of interstellar polarization.

### issa
*contraction · IPA /ˈɪsə/ · frequency rank #21,249*
Contraction of it's + a.

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