Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
hali
←
Proto-Germanic
*halô
(derived)
←
Old Norse
hali
(derived)
→
Icelandic
rófa
(link)
→
Icelandic
halastjarna
(compound)