Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
девяно́сто
→
Belarusian
дзевяноста
(cognate)
→
Russian
девяностолетний
(affix)
→
Russian
девяностолетие
(affix)
→
Ukrainian
дев'яносто
(cognate)