Avestan 𐬠𐬏𐬰𐬀

← Proto-Celtic *bukkos (cognate)

← Persian بز (cognate)

← Proto-Germanic *bukkaz (cognate)

← Proto-Indo-Iranian *bʰuȷ́ás (inherited)

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

← Proto-Iranian *bujáh (inherited)

← Sanskrit बुक्क (cognate)

← Old Armenian բուծ (cognate)

→ Old English bucca (cognate)