Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
забы́ть
→
Belarusian
забыць
(cognate)
→
Russian
забывать
(affix)
→
Russian
забыться
(affix)
→
Russian
позабыть
(affix)
→
Ukrainian
забути
(cognate)