Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-European *h₂eḱH-ono-

→ Danish agn (inherited)
→ Faroese agn (inherited)
→ Icelandic agn (inherited)
→ Norwegian Bokmål agn (inherited)
→ Old Norse agn (inherited)
→ Swedish agn (inherited)