Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
safna
→
Faroese
savna
(mention)
→
Old Swedish
samna
(inherited)
→
Icelandic
safn
(derived)
→
Icelandic
safna
(mention)