# lock vs loon

> English confusable word pair

## The two words

### lock
*noun · IPA /lɒk/ · frequency rank #2,954*
Something used for fastening, which can only be opened with a key or combination.

### loon
*noun · IPA /ˈluːn/ · frequency rank #29,351*
A crazy or deranged person; a lunatic.

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