Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
observation
←
French
observer
(affix)
←
French
-ation
(affix)
←
Latin
observātiō
(borrowed)
→
English
observation
(borrowed)
→
French
observationnel
(suffix)