Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
пло́ский
→
Belarusian
плоскі
(cognate)
→
Russian
плоскогубцы
(affix)
→
Russian
плоскость
(affix)
→
Russian
плошка
(affix)