Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
kjölur
←
Faroese
kjølur
(cognate)
←
Proto-Germanic
*keluz
(inherited)
←
Old Norse
kjǫlr
(inherited)
→
Faroese
kjølur
(cognate)
→
Icelandic
kjölfar
(affix)