# Q3 vs qc

> English confusable word pair

## The two words

### Q3
*noun · frequency rank #23,646*
The third quarter of a calendar year (July, August and September)

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/q3-vs-qc