Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
con
←
Old French
landie
(link)
←
Old French
conme
(mention)
←
Latin
cunnus
(inherited)
→
Old French
conquerre
(prefix)
→
Old French
conjoir
(prefix)
→
Old Occitan
com
(cognate)