# ACS vs arco

> English confusable word pair

## The two words

### ACS
*name · frequency rank #24,368*
Initialism of Australian Computer Society.

### arco
*adverb · frequency rank #49,190*
A note in string instrument musical notation indicating that the bow is to be used in the usual way, usually following a passage that is played pizzicato.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-02.
Canonical page: https://plainspell.com/en/vs/acs-vs-arco