# CSI vs CSU

> German confusable word pair

## The two words

### CSI
*abbrev · IPA […] · frequency rank #39,877*
Crime Scene Investigation

### CSU
*abbrev · IPA [tseːʔɛsˈʔuː] · frequency rank #1,348*
Kurzwort für Christlich-Soziale Union (in Bayern (e. V.))

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