Old Norse bylgja

← Proto-Germanic *bulgijō (inherited)

← Proto-Indo-European *bʰelǵʰ- (root)

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

→ English billow (derived)

→ Danish bølge (inherited)

→ Faroese bylgja (inherited)

→ Faroese Bylgja (derived)

→ Icelandic bylgja (inherited)

→ Norwegian Bokmål bølge (inherited)

→ Norwegian Nynorsk bølge (derived)

→ Norwegian Nynorsk bølgje (inherited)

→ Norwegian Nynorsk bylgje (inherited)

→ Albanian bulçi (mention)

→ Swedish bölja (inherited)