Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Faroese
kjaftur
←
Icelandic
kjaftur
(cognate)
←
Icelandic
kjafta
(mention)
←
Old Norse
kjaptr
(derived)
←
Old Norse
kjǫptr
(mention)
←
Old Norse
kjapta
(derived)
→
Faroese
svartkjaftur
(compound)