# PAH vs psh

> English confusable word pair

## The two words

### PAH
*noun · frequency rank #38,539*
Initialism of phenylalanine hydroxylase.

### psh
*intj · frequency rank #47,850*
Synonym of pshaw.

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