Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
eign
←
Proto-Indo-European
*h₂eyḱ-
(root)
←
Old Norse
eiga
(mention)
←
Old Norse
eiginn
(mention)
→
Danish
egn
(derived)
→
Faroese
ogn
(derived)
→
Icelandic
eign
(inherited)
→
Norwegian Bokmål
egn
(derived)
→
Norwegian Nynorsk
eign
(inherited)