# ASTM vs atom

> English confusable word pair

## The two words

### ASTM
*name · frequency rank #31,068*
Initialism of American Society for Testing and Materials; former name of ASTM International.

### atom
*noun · IPA /ˈætəm/ · frequency rank #10,813*
The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons.

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