# pia vs PS

> English confusable word pair

## The two words

### pia
*noun · frequency rank #25,172*
The pia mater, the innermost of the meninges that protect the brain and spinal cord.

### PS
*name · frequency rank #6,953*
Initialism of a number of proto-languages' names:

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