Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
obscur
←
Old French
oscur
(inherited)
←
Latin
obscurus
(derived)
→
French
obscurément
(suffix)
→
Polish
obskurny
(borrowed)
→
Romanian
obscura
(borrowed)