Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
досту́пный
→
Belarusian
даступны
(cognate)
→
Russian
доступность
(affix)
→
Ukrainian
доступний
(cognate)