Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*lukilaz
→
Faroese
lykil
(inherited)
→
Icelandic
lykill
(inherited)
→
Old Norse
lykill
(inherited)
→
Swedish
nyckel
(derived)