Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*herzną
→
Icelandic
hjarn
(derived)
→
Norwegian Nynorsk
jarnnatt
(derived)
→
Old Norse
hjarn
(inherited)