# pen vs pro

> 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.

### pro
*noun · IPA /pɹəʊ/ · frequency rank #1,232*
An advantage of something, especially when contrasted with its disadvantages (cons).

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