Catalan or

← Proto-Indo-European *h₂é-h₂us-o- (derived)

← Proto-Indo-European *h₂ews- (mention)

← Proto-Italic *auzom (inherited)

← Latin aurum (inherited)

← Old Occitan aur (inherited)

→ Catalan negror (suffix)

→ Catalan grogor (suffix)

→ Catalan blavor (suffix)

→ Catalan fredor (suffix)

→ Catalan rojor (suffix)

→ Catalan vermellor (suffix)

→ Catalan buidor (suffix)

→ Catalan eixutor (suffix)

→ Catalan blancor (suffix)

→ Catalan foscor (suffix)

→ Catalan lletjor (suffix)

→ Catalan lluentor (suffix)

→ Spanish oro (cognate)