Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
desmanchar
←
Old French
desmancher
(derived)
←
Old French
des-
(mention)
←
Old French
manche
(mention)
←
Old French
-er
(mention)