Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
montagneux
←
French
montagne
(suffix)
←
French
eux
(suffix)
←
Old French
montaingneus
(inherited)
←
Latin
montānus
(inherited)