# C1 vs CSI

> German confusable word pair

## The two words

### C1
*noun · IPA [t͡seːˈaɪ̯ns] · frequency rank #20,203*
Abkürzung für die Entscheidungsüberdeckung

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/de/vs/c1-vs-csi