Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
observer
←
Latin
observāre
(borrowed)
←
Latin
observo
(mention)
→
French
observateur
(affix)
→
French
observation
(affix)
→
French
observable
(suffix)
→
Haitian Creole
obsève
(derived)
→
Romanian
observa
(borrowed)