Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Occitan
mosenhor
←
Old French
monsegnuer
(cognate)
←
Old Occitan
mon
(compound)
←
Old Occitan
senhor
(compound)