Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
pecuniarius
←
Proto-Indo-European
*peḱ-
(root)
←
Latin
pecūnia
(suffix)
←
Latin
ārius
(suffix)
→
Romanian
pecuniar
(derived)