# pm vs Psi

> German confusable word pair

## The two words

### pm
*abbrev · frequency rank #8,609*
Einheitensymbol für Pikometer. 1 pm = 10⁻¹² m.

### Psi
*noun · IPA [psiː] · frequency rank #35,967*
Name des dreiundzwanzigsten Buchstabens im griechischen Alphabet

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