Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
молва́
→
Belarusian
мова
(cognate)
→
Russian
безмолвие
(affix)
→
Russian
безмолвный
(affix)
→
Ukrainian
мова
(cognate)