# ACL vs AUC

> English confusable word pair

## The two words

### ACL
*noun · frequency rank #17,750*
Initialism of anterior cruciate ligament.

### AUC
*adverb · frequency rank #48,600*
According to the Roman era, which reckons the number of years passed from the foundation of the city of Rome by Romulus, now usually taken as 753 bc.

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