# Isaac vs Isaiah

> English confusable word pair

## The two words

### Isaac
*name · IPA /ˈaɪzək/ · frequency rank #7,933*
The son of Abraham and Sarah, father of Esau and Jacob, from whom the Hebrew people trace their descent.

### Isaiah
*name · IPA /aɪˈzeɪ.ə/ · frequency rank #12,999*
A book of the Old Testament of the Bible, and of the Tanakh.

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