Old Norse tog

← Proto-Germanic *tugą (derived)

← Proto-Indo-European *dewk- (root)

← Old Norse toga (mention)

→ Danish tov (derived)

→ Westrobothnian tag (mention)

→ Norwegian Bokmål tau (derived)

→ Norwegian Nynorsk tau (inherited)

→ Norwegian Nynorsk tog (inherited)

→ Norwegian taug (inherited)

→ Norwegian faugl (link)