# courier vs curie

> English confusable word pair

## The two words

### courier
*noun · IPA /ˈkʊ.ɹi.ə/ · frequency rank #11,526*
A person who delivers messages.

### curie
*noun · frequency rank #33,599*
3.7×10¹⁰ decays per second, as a unit of radioactivity. Symbol Ci.

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