# cilia vs circa

> English confusable word pair

## The two words

### cilia
*noun · IPA /ˈsɪ.li.ə/ · frequency rank #44,117*
plural of cilium

### circa
*preposition · IPA /ˈsɜːkə/ · frequency rank #13,480*
Approximately, about, around (typically in relation to time)

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