Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
davall
←
Catalan
de
(compound)
←
Catalan
avall
(compound)
→
Catalan
davallar
(suffix)
→
Occitan
devath
(cognate)