Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
пло́щадь
→
Belarusian
плошча
(cognate)
→
Bulgarian
площад
(borrowed)
→
Russian
площадка
(affix)