# PMC vs PTO

> English confusable word pair

## The two words

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

### PTO
*noun · frequency rank #36,300*
Initialism of parent-teacher organization.

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