# arm vs AUC

> English confusable word pair

## The two words

### arm
*noun · IPA /ɑːm/ · frequency rank #1,887*
The portion of the upper human appendage, from the shoulder to the wrist and sometimes including the hand.

### 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/arm-vs-auc