Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
sfadnic
←
Old Church Slavonic
съвадьникъ
(derived)
←
Old Church Slavonic
съвада
(suffix)
←
Old Church Slavonic
ьникъ
(suffix)