# acids vs AIS

> English confusable word pair

## The two words

### acids
*noun · IPA /ˈæ.sɪdz/ · frequency rank #8,884*
plural of acid

### AIS
*noun · IPA /ˈeɪ ˈaɪ ˈɛs/ · frequency rank #26,670*
Initialism of automatic identification system, as an element of the Global Marine Distress and Safety System GMDSS.

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