# pcm vs PF

> English confusable word pair

## The two words

### pcm
*adverb · frequency rank #41,305*
Initialism of per calendar month.

### PF
*noun · frequency rank #16,301*
Initialism of pilot flying, a pilot currently in control of the flight trajectory of the aircraft, as opposed to pilot monitoring.

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