# cal vs CO2

> German confusable word pair

## The two words

### cal
*abbrev · IPA […] · frequency rank #25,938*
Kalorie, Gramm-Kalorie

### CO2
*noun · IPA [ˌt͡seːoˈt͡svaɪ̯] · frequency rank #4,186*
chemische Summenformel von Kohlendioxid

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-02.
Canonical page: https://plainspell.com/de/vs/cal-vs-co2