Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
isteț
←
Proto-Slavic
*jьstьcь
(derived)
→
Romanian
istețime
(suffix)
→
Romanian
isteți
(affix)