# card vs CRO

> English confusable word pair

## The two words

### card
*noun · IPA /kɑːd/ · frequency rank #964*
A playing card.

### CRO
*noun · frequency rank #33,596*
Initialism of Cathode-Ray Oscilloscope.

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