# PMC vs PSP

> English confusable word pair

## The two words

### PMC
*noun · frequency rank #47,266*
Initialism of private military company or corporation.

### PSP
*noun · frequency rank #21,627*
Initialism of phenolsulfonphthalein.

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