Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
cârn
←
Proto-Slavic
*kъrnъ
(derived)
→
Romanian
cârnuț
(suffix)
→
Romanian
Cîrnu
(mention)
→
Romanian
Cârnu
(mention)