Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
démo-
←
Ancient Greek
δῆμος
(derived)
→
French
démographe
(affix)
→
French
démographie
(affix)
→
French
démonyme
(affix)