Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
pestka
←
Proto-Slavic
*pъťьka
(inherited)
→
Polish
pestkowiec
(affix)
→
Polish
pestkojad
(affix)
→
Russian
почка
(cognate)