Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle French
tesmoigner
←
Middle French
tesmoing
(mention)
←
Middle French
-er
(mention)
→
French
témoigner
(inherited)
→
French
témoignage
(mention)