Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
éclairer
←
Old French
esclairer
(inherited)
←
Latin
exclaro
(inherited)
←
Latin
ex-
(mention)
←
Latin
clārō
(mention)
→
French
éclair
(mention)
→
French
éclairage
(suffix)
→
French
éclaireur
(suffix)
→
French
éclairement
(suffix)