# ach vs an

> English confusable word pair

## The two words

### ach
*noun · IPA /æt͡ʃ/ · frequency rank #30,673*
Any of several species of plants, such as smallage, wild celery, parsley.

### an
*article · IPA /ˈæn/ · frequency rank #30*
Form of a (all article senses).

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