Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
lo
←
Latin
illum
(inherited)
←
Old Occitan
lo
(cognate)
→
Old French
lou
(mention)
→
Old Occitan
lo
(cognate)