# CO2 vs cor

> German confusable word pair

## The two words

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

### cor
*noun · IPA […] · frequency rank #41,731*
das Herz

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/de/vs/co2-vs-cor