Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
poterne
←
Old French
posterne
(mention)
←
Old French
posterle
(mention)
←
Latin
posterula
(mention)
←
Latin
posterus
(mention)
→
Finnish
poterni
(derived)