# pen vs PJ

> English confusable word pair

## The two words

### pen
*noun · IPA /ˈpɛn/ · frequency rank #3,775*
An enclosure (enclosed area) used to contain domesticated animals, especially sheep or cattle.

### PJ
*noun · frequency rank #21,616*
Abbreviation of pajama.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-02.
Canonical page: https://plainspell.com/en/vs/pen-vs-pj