Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Poitou
←
French
Poitou
(unadapted borrowing)
←
Latin
Pictāvus
(derived)
→
English
Poitevin
(mention)