# APL vs aud

> English confusable word pair

## The two words

### APL
*noun · frequency rank #48,593*
Initialism of acute promyelocytic leukemia.

### aud
*adjective · IPA /əʊd/ · frequency rank #23,464*
Alternative form of auld.

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