# pen vs PU

> 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.

### PU
*intj · frequency rank #16,315*
Alternative form of P U; expression used when encountering a displeasing smell; exaggerated pronunciation of pew.

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