# CFC vs ci

> 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.

### ci
*noun · frequency rank #14,294*
One of the Classical Chinese poetry forms

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