# arco vs árduo

> Portuguese confusable word pair

## The two words

### arco
*noun · IPA /ˈaɾ.ku/ · frequency rank #4,287*
ente geométrico cuja principal característica é a curva

### árduo
*adjective · IPA /ˈaɾ.dwu/ · frequency rank #22,504*
de difícil acesso

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