# ao vs AP

> English confusable word pair

## The two words

### ao
*noun · frequency rank #17,538*
grue ("blue or green", considered one color)

### AP
*adjective · frequency rank #3,600*
Initialism of all-purpose.

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