Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
милосе́рдие
→
Polish
miłosierdzie
(cognate)
→
Russian
милосердный
(affix)
→
Russian
миловать
(link)