Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle French
moys
←
Old French
mois
(inherited)
←
Old French
meis
(mention)
←
Latin
mēnsis
(inherited)
→
French
mois
(inherited)