Old Norse kýr

← Old English cū (cognate)

← English cow (cognate)

← Proto-Germanic *kūz (inherited)

← Proto-Indo-European *gʷṓws (derived)

→ Old English cu (cognate)

→ Danish ko (inherited)

→ Faroese kúgv (derived)

→ Jamtish kú (inherited)

→ Old High German kuo (cognate)

→ Icelandic kýr (derived)

→ Norwegian Bokmål ku (derived)

→ Norwegian Nynorsk ku (derived)

→ Old Norse kúnni (mention)

→ Elfdalian tjyr (derived)

→ Swedish so (mention)