# qc vs QR

> English confusable word pair

## The two words

### qc
*noun · frequency rank #16,317*
Abbreviation of quaternionic contact.

### QR
*noun · frequency rank #25,895*
Initialism of quick response.

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