# PK vs pro

> French confusable word pair

## The two words

### PK
*noun · IPA \pe.ka\ · frequency rank #15,207*
Protéine-kinase.

### pro
*noun · IPA \pʁo\ · frequency rank #1,039*
Professionnel, professionnelle.

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