# USP vs USPS

> English confusable word pair

## The two words

### USP
*name · frequency rank #33,071*
The United States Pharmacopeial Convention, Inc., a standard-setting authority that publishes USP-NF standards about pharmaceuticals and dietary supplements.

### USPS
*name · IPA /ˌju ɛs pi ˈɛs/ · frequency rank #23,149*
Initialism of United States Postal Service.

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