# PCT vs per

> English confusable word pair

## The two words

### PCT
*name · frequency rank #23,938*
Initialism of Patent Cooperation Treaty.

### per
*preposition · IPA /pɜː/ · frequency rank #339*
For each.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/pct-vs-per