# ISA vs itt

> English confusable word pair

## The two words

### ISA
*noun · IPA /ˈaɪsə/ · frequency rank #13,178*
Initialism of instruction set architecture.

### itt
*pronoun · frequency rank #25,431*
Obsolete spelling of it.

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