# P1 vs PM

> English confusable word pair

## The two words

### P1
*noun · frequency rank #21,607*
Abbreviation of position one, a common abbreviation used in motorsport to signify the frontmost starting position.

### PM
*noun · IPA /ˌpiː ˈɛm/ · frequency rank #2,086*
Initialism of post mortem.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/p1-vs-pm