# CFC vs CX

> English confusable word pair

## The two words

### CFC
*noun · frequency rank #34,818*
Initialism of chlorofluorocarbon, a class of molecules containing chlorine, fluorine and carbon atoms.

### CX
*noun · frequency rank #25,727*
Abbreviation of (short haul) copper.

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