# PAH vs PAPI

> English confusable word pair

## The two words

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

### PAPI
*noun · IPA /ˈpæpi/ · frequency rank #27,591*
Abbreviation of Performance Application Programming Interface.

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