# aca vs au

> Spanish confusable word pair

## The two words

### aca
*noun · IPA [ˈaka] · frequency rank #3,222*
Residuo sólido indigerible del bolo alimenticio, que se excreta a través del ano.

### au
*intj · IPA [ˈaw] · frequency rank #7,821*
Indica dolor.

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