# ceo vs cio

> Portuguese confusable word pair

## The two words

### ceo
*noun · IPA /coː/ · frequency rank #8,861*
nevoeiro; neblina

### cio
*noun · IPA /ˈsi.u/ · frequency rank #22,564*
período de maior apetite sexual e fertilidade de certos animais

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