# cs vs CSI

> English confusable word pair

## The two words

### cs
*conjunction · frequency rank #8,268*
Abbreviation of 'cause (because).

### CSI
*noun · frequency rank #20,894*
Initialism of crime scene investigation (a term of forensic science).

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