Catalan acer

← Spanish acero (cognate)

← French acier (cognate)

← Galician aceiro (cognate)

← Proto-Indo-European *h₂eḱ- (derived)

← Italian acciaio (cognate)

← Latin aciēs (inherited)

← Occitan acièr (cognate)

← Portuguese aço (cognate)

→ Asturian aceru (cognate)

→ Spanish acero (cognate)

→ French acier (cognate)

→ Friulian açâr (cognate)

→ Galician aceiro (cognate)

→ Occitan acièr (cognate)

→ Romansch atschal (cognate)

→ Romansch itschal (cognate)

→ Romansch atschel (cognate)