Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
разу́мный
→
Belarusian
разумны
(cognate)
→
Russian
разумно
(affix)
→
Russian
неразумный
(affix)
→
Russian
разумность
(affix)