Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Faroese
fonn
←
Danish
fon
(cognate)
←
Icelandic
fönn
(cognate)
←
Old Norse
fǫnn
(inherited)
→
Faroese
kavafonn
(compound)
→
Icelandic
fönn
(cognate)