# asr vs ASTM

> English confusable word pair

## The two words

### asr
*noun · frequency rank #44,621*
The afternoon Islamic prayer.

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

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