Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
lén
→
Icelandic
þjóðarlén
(compound)
→
Icelandic
rótarlén
(compound)
→
Swedish
län
(cognate)